Pls help it’s easy ik but I want to make sure of them both I don’t have much time

4.43 seconds

The length of the pendulum and the acceleration caused by gravity affect how long an object will oscillate when it is suspended from the ceiling by a 16-foot string.

The following formula determines a pendulum's period T:

T = 2π * sqrt(L/g)

where g is the acceleration caused by gravity and L is the pendulum's length.

The pendulum in this scenario is 16 feet long. The acceleration brought on by gravity is roughly 32 feet per second. As a result, the oscillation period T is:

T = 2π * sqrt(16/32) = 2π * sqrt(1/2) = 2π * 0.707 = 4.43 seconds (approximately)

T = 2π * sqrt(16/32)

  = 2π * sqrt(1/2)

  = 2π * 0.707  

  = 4.43 seconds (approximately)

Thus, the object's period of oscillation is approximately 4.43 seconds.

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The red (660 nm) component of light emerges from the prism at an angle of 0.597° and the violet (410 nm) component of light emerges from the prism at an angle of 0.589°.

a) The angle at which the red (660 nm) component of light emerges from the prism can be calculated using Snell's law. The incident angle of the beam is 45.0° and the index of refraction of crown glass for this wavelength is 1.512.

sin i / sin r = n

where i is the incident angle, r is the angle of refraction, and n is the index of refraction.

sin i = n sin r

sin 45.0° = 1.512 sin r

r =  sin⁻¹ (sin 45.0° / 1.512)

r = 0.597°

Therefore, the red component of light emerges from the prism at an angle of 0.597°.

b) The angle at which the violet (410 nm) component of light emerges from the prism can be calculated in a similar manner. The incident angle of the beam is still 45.0°, but the index of refraction of crown glass for this wavelength is 1.530.

sin i / sin r = n

where i is the incident angle, r is the angle of refraction, and n is the index of refraction.

sin i = n sin r

sin 45.0° = 1.530 sin r

r = sin⁻¹ (sin 45.0° / 1.530)

r = 0.589°

Therefore, the violet component of light emerges from the prism at an angle of 0.589°.

In summary, the red light and violet light emerge at angles 0.597° and 0.589° respectively from the prism.

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The value of the mean of all values of d (Hd) is -0.04.

As per data the following temperatures,

Temperature (°F) at 8 AM 98.3

Temperature (°F) at 12 AM 99.1 98.8 99.2 97.1 97.4 97.8 97.2

Temperature (F) at 8 AM 99.3 98.8 97.6 97.7 97.1

Temperature (°F) at 12 AM 99.1 99.2 97.8 972 97.4

Let the temperature at 8 AM be the first sample, and the temperature at 12 AM be the second sample. Then,

d = x₂ - x₁

Now, we need to find the values of d for all five subjects.

Therefore, d is as follows:

d₁ = 99.3 - 99.1

   = 0.2

d₂ = 98.8 - 99.2

    = -0.4

d₃ = 97.6 - 97.8

    = -0.2

d₄ = 97.7 - 97.2

   = 0.5

d₅ = 97.1 - 97.4

    = -0.3

In general, Hd represents the mean of all values of d.

Thus, the value of Hd is:

Hd = (0.2 + -0.4 + -0.2 + 0.5 + -0.3) / 5

     = -0.04

Thus, the value of Hd is -0.04.

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Answer:

We can solve this problem using kinematic equations of motion, assuming that air resistance is negligible. We can break the initial velocity of the pumpkin into horizontal and vertical components:

v₀x = v₀ cosθ = 60 cos40° = 45.8 m/s

v₀y = v₀ sinθ = 60 sin40° = 38.4 m/s

Since there is no vertical acceleration after launch, we can use the following kinematic equation to find the time of flight:

Δy = v₀y t + 1/2 a t²

where Δy is the vertical displacement of the pumpkin, a is the acceleration due to gravity (-9.81 m/s²), and t is the time of flight. When the pumpkin lands on the ground, its vertical displacement is zero, so we can solve for t:

0 = v₀y t + 1/2 a t²

t = -2v₀y / a = -7.82 s

This negative value indicates that the pumpkin lands on the ground after 7.82 seconds, which makes physical sense. Now, we can use the horizontal velocity to find the horizontal distance traveled during the time of flight:

Δx = v₀x t = 45.8 m/s * 7.82 s = 358.2 m

Finally, we can find the total speed of the pumpkin at landing by using the Pythagorean theorem:

v² = v₀x² + v²y

v = sqrt[(v₀x)² + (v₀y)²] = sqrt[(45.8 m/s)² + (38.4 m/s)²] = 60.0 m/s (approximately)

Therefore, the answer is D) 60 m/s.

Explanation:

Solution :

The direction of current is into the page.

The magnetic field \($B_1$\) due to the wire is perpendicular to AP and the magnetic field \($B_2$\) due to the wire is perpendicular to BP. Thus, the net magnetic field at point P is towards the right.

The net magnetic field at point P is

\($B_{net} = B_1 \cos \theta + B_2 \cos \theta$\)

The magnetic field is

\($B_1=B_2=\frac{\mu_0I}{2 \pi L}$\)

The angle θ is

\($\theta = \cos^{-1}\frac{h}{L}$\)

The net magnetic field at point P is

\($B_{net}=\left(\frac{\mu_0I}{2 \pi L}\right)\left(\frac{h}{L}\right)+\left(\frac{\mu_0I}{2 \pi L}\right)\left(\frac{h}{L}\right)$\)

       \($=\frac{\mu_0 Ih}{\pi L^2}$\)

a). The direction of the current for both the wires is from north to south. The net magnetic field is towards the right when we are facing south.

\($B_{net}=\frac{\mu_0 Ih}{\pi L^2}$\)

       \($=\frac{\mu_0I L}{\pi \left(\sqrt{h^2+(d/2)^2\right)^2}}$\)

       \($=\frac{4 \pi \times 10^{-7} \times 100 \times 15}{\pi \left(\sqrt{15^2+(3/2)^2\right)^2}}$\)

       \($=2.64 \times 10^{-6} \ T$\)

The direction is towards the west.

b). Since, both the magnetic field are equal and opposite, so no magnetic field is produced.

The bottom chords do not usually need the verticals, since the bottom chords are not subjected to bending loads and the bottom chords only go into compression under severe wind suction that overcomes the dead weight of the structure.

Why the bottom chords not usually need verticles?

Truss is a building structure that is usually composed of several triangular units made of straight bars. The triangle shape helps distribute the weight evenly across the structure, making it much stronger than a traditional beam or other type of structure. The Warren truss is a common type of truss used in construction and engineering projects that is used for its strength and durability.

Modified Warren Truss: It is a variation of the Warren truss that includes vertical web members that are added to the structure to help support the top chord and reduce the span of the structure. This reduces the amount of bending stress that is put on the top chord and helps to keep the structure stable and secure.

Vertical webs: The vertical webs are the diagonal members that are added to the Modified Warren Truss. These help to brace the top chord against buckling upward and downward and support parts of the top chord, thereby reducing the span and associated bending stress of the top chord under the uniform gravity force of the decking resting on the top chord of the truss.

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An infrared thermometer does not have to touch the surface of food to check the temperature accurately.

Infrared thermometers, can be called laser thermometers, work by measuring the infrared radiation emitted by an object.

Since they don't need to make direct contact with the food, they can provide a temperature reading without potentially contaminating the food.

Whilee Infrared thermometers are often used to measure the temperature of food, but they can also be used to measure the temperature of other objects, such as people, animals, and the environment.

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The experimental value for po is  \(13509.23 mT*mm/A\) (two decimal places).

Given the applied current, i = 1.01A and the radius of the colts is 10 cm.

The slope points on the fitted line are (0;0mT) and (2.9;0.019mT).Find the experimental value for po with the following steps.

Step 1:Calculate the slope of the graph by using the slope points on the fitted line.

                     Slope (m) = y₂ - y₁ / x₂ - x₁= (0.019 - 0) / (2.9 - 0)

Slope (m) = 0.00655 mT/mm.

Step 2:Calculate the magnetic field intensity for the given applied current by using the following formula;

                        \(B = µo * i * n * r² / (2 * r)Where µo = 4π * 10⁻⁷ Tm/A\) is the permeability of free space.

                           n = 130 is the number of turns per unit length.

                         r = 0.1 m is the radius of the colts.

                           i = 1.01A is the applied current.

  So, B = 2.066 * 10⁻³ T or 2.066 mT.

Step 3:Calculate the experimental value for po by using the following formula;

                 \(po = m * B * 10⁶ \\po = 0.00655 * 2.066 * 10⁶\\po = 13509.23 mT*mm/A\)

Therefore, the experimental value for po is 13509.23 mT*mm/A (two decimal places).

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The refracted angle in medium B is approximately 36.03 degrees.

To determine the refracted angle in medium B, we can use Snell's law, which relates the incident angle (θ1), refracted angle (θ2), and the refractive indices of the two mediums.

Snell's law is given by:

n1 * sin(θ1) = n2 * sin(θ2)

The refractive index of medium A (n1) is 1.4 and the refractive index of medium B (n2) is 1.5, and the incident angle (θ1) is 38.59 degrees, we can substitute these values into Snell's law to solve for the refracted angle (θ2).

Using the equation, we have:

1.4 * sin(38.59°) = 1.5 * sin(θ2)

Rearranging the equation to solve for θ2, we get:

θ2 = arcsin((1.4 * sin(38.59°)) / 1.5)

Evaluating this expression using a calculator, we find that the refracted angle (θ2) in medium B is approximately 36.03 degrees.

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According to the question the orbital speed of the satellite is 3300 m/s.

Orbital speed is the speed at which an object orbits, or revolves around, another object. It is the speed of an object in a circular orbit around a central body, such as a star, a planet, or a moon. The speed of an object in an elliptical orbit is not constant, however, it changes as the object moves closer to, or further away from, the central body.

T = 2π√(a3/μ)
Plugging these values into the equation above, we get:
T = 2π√(2.1x107 m3/3.986x1014 m3/s2)
T = 2.5x104 s
The orbital period of the satellite is 2.5x104 s, or 6.9 hours.
v = 2πa/T
Plugging in the values for a and T, we get:
v = 2π(2.1x107 m)/(2.5x104 s)
v = 3300 m/s
The orbital speed of the satellite is 3300 m/s.

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When a switch has been closed for a long time, and someone comes along and quickly opens the switch, a large and dangerous spark is observed across the contacts of the switch because: the inductance of the circuit does not change immediately.

The inductance of the circuit opposes the change in current, and it takes time for the current to drop to zero, which causes a large and dangerous spark across the contacts of the switch when it is turned off quickly after being turned on for a long time.

An inductor is a passive component of an electrical circuit that stores energy in the form of a magnetic field. An inductor is typically composed of a coil of wire, although it can be produced in other forms, such as a spiral or a toroidal (donut-shaped) coil.

Inductors are used in a variety of applications, including tuning circuits, filters, and power supplies.

Inductance is the capability of a circuit to store energy in a magnetic field that surrounds the coil. The current in the coil produces a magnetic field that resists variations in current. When the circuit is turned off, the inductance of the circuit prevents the current from dropping to zero instantaneously.

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The width of the central diffraction peak in Young's double-slit experiment can be determined using the formula:

w = (λ * D) / d

Where:

w is the width of the central diffraction peak,

λ is the wavelength of light (558 nm or 558 × 10^(-9) m),

D is the distance between the slit and the screen (2.30 m), and

d is the width of the slit (0.0348 mm or 0.0348 × 10^(-3) m).

Plugging in the given values, we get:

w = (558 × 10^(-9) m * 2.30 m) / (0.0348 × 10^(-3) m)

Calculating the result:

w ≈ 0.0368 m

Converting to millimeters:

w ≈ 36.8 mm

Therefore, the width of the central diffraction peak, or the distance between the dark spots on either side, is approximately 36.8 mm.

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Answer:

I already told ya

Explanation:

i got brainly so i could learn

Answer:

900 windings

Explanation:

Applying,

Vs/Vp = Ns/Np............. Equation 1

Where Vs = Secondary voltage, Vp = primary voltage, Ns = Number of turns in the secondary circuit, Np = number of turns in the primary circuit

make Ns the subject of the equation

Ns = VsNp/Vp........... Equation 2

From the question,

Given: Vs = 240 V, Np = 300 windings, Vp  = 80 V

Substitute these values into equation 2

Ns = (240×300)/80

Ns = 900 windings

Hi there!

1.

The period of a pendulum can be calculated using the following equation:
\(\large\boxed{T = 2\pi \sqrt{\frac{L}{g}}}\)

T = period (s)

L = length of string (m)
g = acceleration due to gravity (m/s²)

Plug in the values:

\(T = 2\pi \sqrt{\frac{4}{9.8}} = \boxed{4.014 s}\)

2.

Calculate the period:

\(T = \frac{\text{Time}}{\# of oscillations} = \frac{5}{20} = \boxed{0.4 s }\)

Frequency is the reciprocal of the period, so:

\(f = \frac{1}{T} = \frac{1}{0.4} = \boxed{2.5 Hz}\)

Answer:

i think b sorry if im wrong!

Explanation:

According to this graph, an object that would cause a mass extinction would need to be at least 10 km is diameter.

Any word (or pronoun) that forms the subject of a verb or preposition is referred to as an object. There are three categories of items: Straight Thing (e.g., I know him.) Unrelated Item (e.g., Give her the prize.) Prepositional Object (e.g., Sit with them.)

An expression's subject. The subject's verb's action upon a person, place, or thing is typically called the object. As you might expect, looking for the pronoun or the noun that follows the verb is the quickest approach to identify the subject in a simple sentence.

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if you take 6 liters of air from the surface to a depth of 20 meters/66 feet, the volume will decrease to approximately 2 liters.

When a given amount of air is taken from the surface to a certain depth underwater, the volume of the air will decrease due to the increase in pressure at greater depths.

Boyle's Law states that the volume of a gas is inversely proportional to its pressure when the temperature is held constant.

Boyle's Law can be expressed as:

P₁ × V₁ = P₂ × V₂

Where P₁ and V₁ represent the initial pressure and volume, and P₂ and V₂ represent the final pressure and volume.

let's assume the initial volume (V₁) is 6 liters and the initial pressure (P₁) is the atmospheric pressure at the surface.

Let's assume a typical approximation of the pressure at 20 meters/66 feet is roughly 3 times the atmospheric pressure.

Using Boyle's Law,

P₁ × V₁ = P₂ × V₂

1 atm × 6 L = (3 atm) × V₂

6 L = 3 atm × V₂

V₂ = 6 L / 3 atm

V₂ = 2 L

Therefore, the amount of air will drop to about 2 liters if you descend from the surface to a depth of 20 meters/66 feet.

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Answer: Jenny can use many apps and Software to change her graduation photo into black and white with many tools the best tool is desaturation.

Explanation:

so theres your answer

Answer:

Explanation:

The gravitational force between the earth and another body is F = -GM_em/r^2 r where G = 6.67 times 10^-11 Nm^2/kg^2 is the gravitational constant, M_e = 5.97 times 10^24 kg is the mass of the earth, m is the mass of the other body, and r is the position vector of the second body with respect to the centre of the earth.

The equilibrium price and the equilibrium amount of beef will both rise in response to a decline in the supply of beef.

When supply and demand, as well as financial forces, are in balance, there is economic equilibrium, and the values of economic variables do not change in the absence of external influences.

When supply and demand are in balance, the number of people who want to purchase an item determines the demand. This cycle has a number of variables, and if it continues to rise, the last minimal cost can enable a person to purchase an item. For instance, if you purchase ice cream every day and the price keeps rising, even if it is only by a cent, this ongoing rise in price could result in the last cent becoming an obstacle.

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Answer:

14,400m

Explanation:

The formula for calculating speed is S=D/T.

S=speed( in meters per second- m/s)

D=distance(in meters)

T=time( in seconds)

For our case:

S=40m/s

D=?

Time=2 hours=60min x 60 sec=3600seconds

Now make D the subject.

D=S x T

D=4m/s x 3600s=14,400m

Therefore our answer is

14 400 m or 14.4 km

Typically no. There are separate buttons for the windshield defroster and the rear window defroster. On some cars, the heater may turn on while the temperature control is set to "auto," but you can still turn it off on your own.

In order to defog the rear window and melt frost, snow, and ice, it must be turned on, which activates a grid of wires that may be seen as thin lines on the inside of the glass. The majority of rear defrosters run on a timer that, after around ten minutes, turns the defroster off automatically.

Typically, the front window is heated with hot air from the main heating system, which is heated by the engine coolant, and the rear window has an electrical resistance heating element connected to the glass.

The primary reason is that, since the heat exchanger for the cabin heater is frequently located directly behind the dashboard, it isn't particularly practical to duct hot air all the way to the back.

Although less popular because it requires the use of extremely small wire in order to avoid obstructing visibility, some automobiles also have electrically heated front windows. This feature has the advantage of operating a little bit quicker.

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Answer:

a moderate base

Explanation:

Milk of magnesia is popularly known as magnesium hydroxide. Magnesium hydroxide Mg(OH)₂ is used as an anti-acid in toothpaste and medically as a mild laxative.

Its pH values range between 10- 11 on the pH scale.

A solution with pH value of 7 is neutral(i.e. neither acidic nor basic.

A pH value which is less than 7 is acidic while a pH value greater than 7 is basic.

For a pH value between 12 -14 on the pH scale is said to be a strong base.

Since Milk of magnesia Mg(OH)₂ pH values ranges between 10- 11 on the pH scale, it is known to be moderately basic.

If you start with 1,000 grams of erbium-165, the time it  will take to have 125 grams of erbium-165 left in the sample is 20.8 hours.

option D is the correct answer.

Half life is the time that it takes for half of the original value of some amount of a radioactive element to decay.

If you start with 1,000 grams of erbium-165, the time it  will take to have 125 grams of erbium-165 left in the sample is calculated as follows;

1,000 ---------- 0 time

500 ----------- 10.4 hours

125 ------------- 20.8 hours

Thus, from the calculation done above, we can see that If you start with 1,000 grams of erbium-165, the time it  will take to have 125 grams of erbium-165 left in the sample is 20.8 hours.

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Answer:

mass , velocity

Explanation:

K.E= 1/2 X mv2

In physics, frequency is the number of waves that pass a fixed point in a unit of time, as well as the number of cycles or vibrations that a body in periodic motion experiences in a unit of time.

Calculation:

Statistical file:

{600, 400}

Frequency table :

Element         Cumulative                 Relative                Cumulative relative

frequency      frequency           frequency          frequency

400 1                  1                         0.5                  0.5

600 1                  2                         0.5                   1

Z-score: {1, -1}

Count items: 2.

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Answer:

You should tell her in a nice way that that's just not your style and if she doesnt accept that then maybe you should just not talk to her for a while and let her cool down

Explanation:

Hope this helps

Answer:

Asteroid 1 has more mass than asteroid 2

Explanation:

User avatar

thenoobygamerpro

01/25/2020

Physics

Middle School

answered

Asteroid 1 moving 8km/s right asteroid 2 moving 16 km/s left before the crash. After the crash asteroid 1 is moving 4 km/s left and changed speed bu 12km/s. Asteroid 2 moving 2km/s left and changed speed by 14km/s

Two asteroids crashed. The crashed caused both asteroids to change speed. Scientist want to use the change in speed and motion to figure out which asteroid has more mass. Based on the information in the diagram. which statement is correct? In your answer explain what the forces were like and why the asteroids changed motions

Asteroid 1 has more mass than asteroid 2

Asteroid 1 and asteroid 2 are the same mass

Or asteroid 1 has lees mass than asteroid 2

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can you complete the full sentence?

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Answer: Asteroid 1 has more mass than asteroid 2

Explanation:

We can use the conservation of momentum law to find the answer. So, according to this law:

"If two objects or bodies are in a closed system and both collide, the total momentum of these two objects before the collision will be the same as the total momentum of these same two objects after the collision".

This means the momentum before the collision or crash () is equal to the momentum after the collision ():

(1)

Before the crash:

(2)

Where:

is the mass of the first asteroid

is the velocity of the first asteroid

is the mass of the second asteroid

is the velocity of the second asteroid

(3)

After the crash:

(4)

Where:

is the final velocity of the first asteroid

is the final velocity of the second asteroid

(5)

Substituting (3) and (5) in (1):

(6)

Grouping similar terms:

(7)

Then:

(8) This means  must be multiplied by 1.16 km/s in order to make this side of the equation equal to .