object a has a charge of 12 c, and object b has a charge of 16 c. which statement is true about the electric forces on the objects? (a) f : ab 5 23f : ba (b) f : ab 5 2f : ba (c) 3f : ab 5 2f : ba (d) f : ab 5 3f : ba (e) f : ab 5 f : ba (f) 3f : ab 5 f : ba

Answer:

magnitude of the resultant of forces is 11.45 N

Explanation:

given data

force F1 = 6N

force F2 = 8N

angle = 240°

solution

we get here resultant force that is express as

F(r) = \(\sqrt{F_1^2+F_2^2+2F_1F_2cos\ \theta}\)    ..............1

put here value and we get

F(r) = \(\sqrt{6^2+8^2+2\times 6\times 8 \times cos240}\)

F(r) =  11.45 N

so magnitude of the resultant of forces is 11.45 N

The formula for centripetal acceleration within the spacecraft is: ac =The outside radius of a spacecraft's doughnut-shaped body is 440 metres. The people are standing with thier feet on an outer rim and their heads .

Earth's crust is made of igneous, metamorphic, or sedimentary rocks, which range in composition from mud or clay to diamonds or coal. Igneous rocks, which are created as magma cools, are the most prevalent types of rocks in the crust. Igneous rocks like granite and basalt are abundant in the crust of the Earth.

The distance between any two places on a circle's circumference is in fact its radius. R or r are frequently used to denote it. Almost all calculations involving circles take this quantity into account. The radius of a circle can be used to determine a circle's circumference and surface area.

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The frequency of the wave is 0.625 waves per second, calculated by dividing the number of waves (10) by the time (16.0 seconds).

To determine the frequency of a wave, you need to divide the number of waves (in this case, 10) by the time it takes for those waves to pass a certain point (in this case, a dock) within 16.0 seconds.

Frequency is usually measured in Hertz (Hz), which represents the number of cycles or events per second. So, to find the frequency, we calculate 10 waves / 16.0 seconds = 0.625 waves per second or 0.625 Hz.

This means that every second, 0.625 waves pass by the dock, giving you the frequency of the wave.

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Answer:

one element that makes up globular star clusters is hydrogen

Explanation:

hope I'm right don't forget to smile today:)

Answer:

Solids

Is this what your looking for, It might tell you the answer?

Answer:

Mass = 56.83 Kg

Explanation:

\(PE = mgh\\9094 J = 16m*10 m/s^2*mass\\mass = \frac{PE}{g*h} \\mass = \frac{9094 J}{16*10} = 56.83 kg\)

Kepler's second law states that the speed of planet's orbit varies depending on which part of the ellipse it is occupying. Thus, option (2) is correct.

Answer:

The answer to your question is given below

Explanation:

To solve this problem, we'll assume that the plane is initially at rest.

Hence, the kinetic energy of the plane at rest is zero i.e Initial kinetic energy (KE₁) = 0

Next, we shall determine the final kinetic energy of the plan when the force was applied. This can be obtained as follow:

Force (F) = 5000 N

Distance (s) = 500 m

Energy (E) =?

E = F × s

E = 5000 × 500

E = 2500000 J

Since energy an kinetic energy has the same unit of measurement, thus, the final kinetic energy (KE₂) of the plane is 2500000 J

Finally, we shall determine the change in the kinetic energy of the plane. This can be obtained as follow:

Initial kinetic energy (KE₁) = 0

Final kinetic energy (KE₂) = 2500000 J

Change in kinetic energy (ΔKE) =?

ΔKE = KE₂ – KE₁

ΔKE = 2500000 – 0

ΔKE = 2500000 J

Hence, the change in the kinetic energy of the plane is 2500000 J.

The speed of the players just after the collision is 0.81 m/s.

An inelastic collision, as opposed to an elastic collision, is a collision in which there is no conservation of kinetic energy due to the action of internal friction.

Given that the mass of the fullback is m = 88 kg

mass of the opponent, M = 97 kg

speed of the fullback, u = 5 m/s

speed of the opponent, U = 3 m/s

In an inelastic collision, the two bodies move together at the same speed and the total momentum of the system remains conserved.

Let the final speed be v, then by conserving the momentum we get:

mu - MU = (m + M)v

Since the opponent must be moving in the opposite direction to the fullback, therefore his momentum is -MU.

88×5 - 97×3 = (88 +97)v

149 = 185v

v = 0.81 m/s

So, both the players move with a speed of 0.81 m/s

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Answer:

Explanation:

Let the radius of orbit of geostationary satellite be R .

Time period of satellite = 2πR / V₀ where V₀ is orbital velocity

T = 2πR / √gR

T= 2πR / √(GM / R )

T = 2πR¹°⁵ / √GM  

R¹°⁵ = T x √GM  / 2π

T = 23.934 h = 23.934 x 60 x 60 s = 86126.4 s

R¹°⁵ = 86126.4 x √ ( 6.67 x 10⁻¹¹ x 5.972 x 10²⁴ )  / 2π

= 86126.4 x √ ( 398.33 x 10¹²  )  / 2π

= 86126.4 x 19.95 x 10⁶  / 2π

= 273.428 x 10⁹

R = 42.92 x 10⁶ m

= 42920 km

Radius of orbit = 42920 km

radius of earth = 6370 km

Altitude of satellite = 42920 - 6370 = 36550 km .

In US customary unit = 36550 x 10³ /.9144 yards

= 36550 x 10³ /(.9144 x 1760 ) miles

= 22771 miles .

The  wavelength at which the object emits the most radiation is 1.12 micrometers.

We use  Wien's displacement law in order to find the wavelength at which the object emits the maximum radiation.

The temperature of the item has an inverse relationship with the peak wavelength of the radiation it emits according to Wien's displacement law,

The formula of  Wien's displacement law,  is given as

λ_max = b/T

where λ_max =e peak wavelength of emitted radiation,

T = temperature of the object in Kelvin, and

b = Wien's displacement constant 2.898 × 10^-3 mK.

T = 2310°C + 273.15 = 2583.15 K

λ_max = (2.898 × 10^-3 mK) / 2583.15 K

λ_max = 1.12 × 10^-6 m = 1.12 μm

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Answer:

0.5 m/s²

Explanation:

Net force = mass × acceleration

∑F = ma

20,000 N = (40,000 kg) a

a = 0.5 m/s²

Answer:

which one will not start moving faster

Explanation:

Mass is also described by physics. If you apply the same amount of force to a small sports car and to a big garbage truck.

Answer:

2.46 x 104

Explanation:

Solution

Recall that:

The retention time of a peak = 407 s

with a width at half-height of = 7.6 s

A compound is retained in 2.5 s.

resolution to be achieved = 1.5

Thus,

The number of plates (theoretical)= 16(tr2 / w2)

The R Resolution R= 0.589 Δtr / w1/2av = 0.589(17s) / 1/2(7.6s + 9.4s) = 1.18

Supposed that applied column contains 10,000 theoretical plates and the resolution of two peaks is 1.18

So if the column is replaced to obtain 1.5 resolution, the number of theoretical plates is needed is  stated below;

width at the base = 9.4 - 7.6 = 1.8; tr = 0.786

N = 5.55tr2 / w21/2 = 5.55 (0.7862/ 1.182) x 104

= 2.46 x 104

Therefore, required theoretical plates to achieve a resolution of 1.5 is 2.46 x 104

Answer:

Explanation: The correct answer is: the sound of the train's horn to appear to be at a higher pitch.

As the high speed rail train approaches the crossing, it moves towards the sound waves it creates. This causes the frequency of the sound waves to be compressed, which results in an apparent increase in frequency or pitch of the train's horn. This effect is known as the Doppler shift. Therefore, the sound of the train's horn will appear to be at a higher pitch.

After converting he units from R to Joule, we obtain 5.33 × 10⁻¹⁰ J·cm⁻⁴ as the result.

What is joule?

To convert  R to J, convert their units,

1 kPa·km = 1.0 × 10⁻⁸ J(cm⁻⁴)

0.0533 kPa·km = -0.0533 × 1.0 × 10⁻⁸ J(cm⁻⁴)

= 5.33 × 10⁻¹⁰ J·cm⁻⁴

Thus, After converting he units from R to Joule, we obtain 5.33 × 10⁻¹⁰ J·cm⁻⁴ as the result.

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Answer:

In an ionic bond the valence electrons are transferred from the metal

Explanation:

Answer:

1 km

Explanation:

displacement =velocity ×time

displacement =40m/s ×25s

displacement =1000m equivalent to 1km

The two sentences that best state the central ideas of Wiesel's speech are:

Elie Wiesel's speech focuses primarily on the Holocaust and the atrocities that were committed during that time, particularly at Auschwitz. The central ideas of his speech are:

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The tension in ropes 1 and 2 is mathematically given as

a)T1=310N

b)T2=610N

Question Parameters:

A rescuer is hauling up an injured climber who weighs 930 N

Generally, from the diagram, we see that the respective Tensions is mathematically given as

T2=2T1

Where

T1+T2=930

3T1=930

T1=310N

In conclusion, the tension in rope 2

T2=2T1

T2=2*310

T2=610N

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a. The push is 150 N and acts to the right while the frictional force is 150 N and acts to the left.

b. The weight is 490 N and acts downwards while the normal force is 490 N and acts upwards.

c. The package moves 1.8 m

d. The package's acceleration is 0 m/s²

The push is 150 N and acts to the right while the frictional force is 150 N and acts to the left.a

Since the direction of push and the floor is horizontal, and first horizontal force acting on the package is the push and its magnitude is 150 N.

Also, a frictional force also acts to oppose the motion of the package.

Since the packge moves at a constant velocity of 0.6 m/s, its acceleration is zero and thus the net force on the package is zero.

Let

So, F - f = 0

F = f

= 150 N

So, the frictional force is 150 N and opposite to the push.

So, the push is 150 N and acts to the right while the frictional force is 150 N and acts to the left.

The weight is 490 N and acts downwards while the normal force is 490 N and acts upwards.

Since the floor is horizontal, the vertical forces that act on the package are its weight and the normal force due to the ground.

The direction of the weight is downwards while the direction of the normal force is upwards.

Since the floor is horizontal and the package does not move in the vertical direction, the net vertical force is zero.

So, the net force N - W = 0

N = W

= mg

= 50 kg × 9.8 m/s²

= 490 N

So, the weight is 490 N and acts downwards while the normal force is 490 N and acts upwards.

The package moves 1.8 m

Since distance, d = vt where

So, d = vt

= 0.6 m/s × 3 s

= 1.8 m

So, the package moves 1.8 m

The package's acceleration is 0 m/s²

Since the net force on the package is zero, its acceleration is also zero. Since force, F = ma where

Since F = 0,

ma = 0

a = 0

So, the package's acceleration is 0 m/s²

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Answer:

below

Explanation:

Force is needed to cause a change in the motion or shape of an object. In physics, force is defined as any influence that causes an object to undergo a certain change. This can include pushing, pulling, twisting, stretching, compressing, or any other type of action that alters the state of an object. Forces are typically measured in units of Newtons (N) and are represented by vectors, which indicate both the direction and magnitude of the force. Some common examples of situations where force is needed include lifting an object, accelerating a vehicle, compressing a spring, or bending a beam.

Answer:

Force can be used in many different ways to small stuff like flicking a bug away or picking up your pencil you use force all the time even when typing just to press down on those little keys.

Force can also be used to move heavy objects such as boulders, tables, cinder blocks, and brick stones. So force can be used in many different ways the strongest man “ Ben Weider “ known as the strongest man lifting 500 pounds in 1995 - 2000. He uses force to lift up the things that he carries.

Force can be used in many ways like I said typing something out or bench pressing. But force can be limited due to your strength.

Thus the answer to your problem is, ↑↑↑↑

1.5 grams  of Iodine-131 is left after 32 days

The half life of a substance is given by:

No (1/2 ) ^ t / (t*1/2)

Where No is the substance remaining after the period

t(1/2) is the half life

t(1/2) = 8 days

t = 32 days

No =  24 grams

N = 24 x (1/2)^ 32/ 8

N = 1.5 grams

Half-life is  described as the length of time it takes for half of the radioactive atoms of a specific radionuclide to decay.

A good rule of thumb is that, after seven half-lives, you will have less than one percent of the original amount of radiation.

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Answer:

No. D is the right answer

Answer:

i had this question as well!

Explanation:

Answer:

1. to the Mystic 2. A Theme or social value 3. Something that can be valued 4. Can’t be observed/ Noticed.

Explanation:

Answer:Erosion is the gradual destruction of something by wind, water, etc.

A large rock breaks down into sediment involves erosion because it is being broken down by water (because it says the sedimentary rock is formed at the bottom of a river).

The upper layers of deposits put pressure on the lower layers also involves erosion because the upper layers are eroding the lower layers, making it possible for the layers to stick together.

Explanation:

The function is not continuous at x=1, so the answer is A.

At x=1, the two pieces of the function meet. The first piece ends with an open dot at (1,0), meaning that the function is not defined at $x=1$. The second piece starts with a closed dot at (1,-1), meaning that the function is defined at x=1 and takes the value -1 there.

Since the function is not defined at x=1, it cannot be continuous at that point. Therefore, the function is not continuous overall.

Answer: a . it decreases

Explanation: