A ΔV = 2.7 V battery loses E = 6 J of energy each day (t = 24 hrs) powering a cell phone.
Part (a) Input an expression for the average current, I, supplied to the phone. Expression :
I = __________________________________________
Select from the variables below to write your expression. Note that all variables may not be required. α, β, ΔV, θ, a, d, E, g, h, j, k, m, P, S, t
Part (b) What is the current in Amperes?
Numeric : A numeric value is expected and not an expression. I =

You would be left with 1.25 g.

After 0.001 second, 10 grams decays to 5 grams.

After another 0.001 second, 5 g decays to 2.5 g. (Total time 0.002 s; two half-lives have passed)

After another 0.001 second, 2.5 g decays to 1.25 g. (Total time 0.003 s; 3 half-lives have passed)

The initial velocity of the rifle bullet is 2760 ft/s. It comes to rest after hitting the tree in 0.13 seconds.

We are supposed to find the acceleration of the rifle bullet given the initial velocity and time taken to come to rest.

Therefore, we can use the formula to calculate acceleration (a) from the given values of velocity (v) and time taken (t) which is given as follows:

a = (v - u) / t

Where,u = Initial Velocity

v = Final Velocity

a = acceleration

t = time taken

Now, substituting the given values of u, v, and t in the above formula, we get:

a = (v - u) / ta

= (0 - 2760) / 0.13

We get the acceleration of the rifle bullet as - 21230.76923076923 ft/s² (Rounding to 2 decimal places, it is -21230.77 ft/s²).

The acceleration of the rifle bullet is negative because it's coming to rest, indicating a deceleration.

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Answer:

The size of an object is directly proportional to the gravity

Explanation:

The size of an object has significant impact on the gravity exerted by such a body.

The more massive a body is, the larger the gravity it exerts.

The reason for this is because of the newton's law of universal gravitation.

Answer:

pizza is a heterogeneous mixture.

Explanation:

A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture. Vegetable soup is a heterogeneous mixture. Any given spoonful of soup will contain varying amounts of the different vegetables and other components of the soup

Answer:

6m.s‐²

Explanation:

IF there is no friction or any other force acting on the objects then use the equation Fnet=m.a

Fnet=m.a

270=45(a)

a=6

results will change if there is another force acting on the box besides the pushing force

please give brainliest

Answer:

F = 70000  N

Explanation:

Given that,

Mass of a car, m = 1400 kg

Initial speed of the car, u = 15 m/s

Finally, it hits the ground, v = 0

Time, t= 0.3 s

We need to find the force experienced by the car. Using Newton's second law of motion to find it.

F = ma

a is acceleration of the car.

\(F=\dfrac{m(v-u)}{t}\\\\F=\dfrac{1400\times (0-15)}{0.3}\\\\=-70000\ N\)

So, the force experienced by the car has a magnitude of 70000  N.

Answer: Light is not a form of matter, so a is not a property of light.

Explanation:

Faith, respect, and effective communication are the three tips to start a healthy dating relationship mentioned in the article.

What are three recommendations for beginning a happy relationship?

Trust, respect, effective communication, adaptability, a common interest, time apart, different connections (with family and friends), and appreciation. Each partner needs to have confidence in the other. Never should your partner belittle you, test you, or say anything disparaging about you.

What are good relationships?

Healthy relationships involve open communication, honesty, trust, and respect between partners as well as work and compromise from both parties. There is no imbalance of power. Partners are free to make decisions together, respect each other's independence, and take individual actions without worrying about the consequences.

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Answer:

a giant covalent structure

This issue can be resolved by applying the momentum conservation principle. The total amount of momentum prior to and following the impact are equal. This can be expressed as:

(M1 + M2)vf = m1v1 + m2v2

m1 equals 200 kilograms (mass of wrestler 1)

v1 = 2.3 m/s (velocity of wrestler 1) (velocity of wrestler 1)

v2 = 2.9 m/s (velocity of wrestler 2) (velocity of wrestler 2)

m2 = the wrestler's mass two (unknown)

vf is the wrestlers' combined final speed before the collision (which we know is zero)

It's the same response we previously received. The problem is that the negative sign shows that Wrestler 2's velocity is moving in the opposite direction from Wrestler 1's velocity. Wrestler 2 is therefore traveling against the current. To gather the wrestlers in bulk

If r 2 is 2, we can omit the minus sign and use the absolute value instead:

As a result, wrestler 2 weighs roughly 158.62 kg.

In order to change the momentum of an object, you must exert a certain amount of force over a specific period of time. It is  because of this. For instance, when you strike a ball with a cricket bat, you exert power temporarily (in this case, very briefly) in order to change (or transfer) the momentum of the ball. |m2| = 158.62 kg

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In addition to heating the Earth's oceans and atmosphere and causing weather patterns, the Sun also gives energy to the planet's green, expanding vegetation, which provides food and oxygen for life.

Despite the fact that its heat and light are what make the Sun so well-known to us, it also has other, less obvious effects on the planet and human culture. The emission or transmission of energy as waves or particles through space or through a material medium is referred to as radiation in physics. The electromagnetic spectrum, which encompasses radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma radiation, is included in this. One of a body's fundamental characteristics is mass. Before the discovery of the atom and particle, it was widely believed that it was tied to the amount of matter in a physical body.

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It emits solar energy, which enables life to exist on Earth, in the form of light and heat. To flourish, plants require sunshine. Humans and other animals alike depend on plants for food and the oxygen they create.

Solar energy is a renewable resource that plays a significant part in lowering greenhouse gas emissions and preventing climate change, which is essential for safeguarding people, animals, and ecosystems. Additionally, the usage of solar energy can minimize water consumption and enhance air quality.

When natural resources are restored more quickly than they are used up, it is said to be using renewable energy. Such sources that are constantly replenished include the sun and the wind, for instance.

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The frequency of the photon is 1.06 × 10^15 Hz.

When a neutron is moving with a speed of 1.40 m/s, it has momentum p = mv, where m is its mass and v is its velocity. The momentum of the neutron is equal to that of a photon that has the same momentum. This means that the photon and the neutron have the same momentum, i.e. p_photon = p_neutron. The momentum of the neutron is given by: p_neutron = mv, where m is the mass of the neutron and v is its speed.

The mass of the neutron is approximately 1.67493 × 10^−27 kg. Therefore,

p_neutron = (1.67493 × 10^−27 kg)(1.40 m/s) = 2.34491 × 10^−27 kg m/s

Since the photon has the same momentum as the neutron, its momentum is also 2.34491 × 10^−27 kg m/s. The momentum of a photon is given by:

p_photon = h/λ, where h is Planck's constant and λ is the wavelength of the photon. Therefore,

λ = h/p_photon, where h is approximately 6.626 × 10^−34 J s.

Therefore, λ = (6.626 × 10^−34 J s)/(2.34491 × 10^−27 kg m/s) = 2.824 × 10^−7 m

The frequency of the photon is given by:f = c/λ, where c is the speed of light.

Therefore, f = (3.00 × 10^8 m/s)/(2.824 × 10^−7 m) = 1.06 × 10^15 Hz.

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The distance the truck travel in given time is 216 m and the final velocity of acceleration at 0.5m/\(s^{2}\) for 30 seconds is 19 m /s

The following question has two parts

For part 1 we need to calculate the distance covered by the truck in 12 seconds

We know that

 s = ut + \(\frac{1}{2}a .t^{2}\) . . . . . . .  . . . . .(1)

where s = distance travelled

           u = initial velocity

           a = acceleration

           t  =  time in seconds

Now , As per the question

u = 6 m/s

a = 2 m/\(s^{2}\)

t  = 12 seconds

Putting the values in the equation (1)

                          s = 6 X 12 + \(\frac{1}{2}\) X 2 X 144

                          s = 72 + 144

                          s = 216 m

Therefore the distance travelled is 216 m

For part 2 we need to calculate the final velocity that Paco was driving

We know that

v = u + at . . . . . . . . . . .  .(2)

where v = final velocity

          u = initial velocity

          a = acceleration

           t = time in seconds

As per the question,

u = 4m/s

a = 0.5 m/\(s^{2}\)

t = 30 seconds

Putting in equation (2)

                                      v = 4 + 0.5 X 30

                                      v  =  4 + 15

                                      v = 19 m/s

Therefore the final velocity is 19 m/s

Therefore , the distance the truck travel in given time is 216 m and the final velocity of acceleration at 0.5m/\(s^{2}\) for 30 seconds is 19 m /s

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The final velocity of the scooter is 19 m/s.

Given:

Initial velocity of truck, u = 6 m/s

Acceleration of truck, a = 2 m/s²

Time taken by the truck, t = 12 s

Formula used:

s = ut + 1/2 at²

Where,

s = Distance travelled

u = Initial velocity

a = Acceleration

t = Time taken

Substituting the given values in the above formula, we get:

s = ut + 1/2 at²

 = 6(12) + 1/2 × 2 × (12)²

 = 72 + 1/2 × 2 × 144

 = 72 + 144

 = 216 m

Therefore, the truck travels 216 m in the given time.

Given:

Initial velocity of scooter, u = 4 m/s

Acceleration of scooter, a = 0.5 m/s²

Time taken by the scooter, t = 30 s

Formula used:

v = u + at

Where,

v = Final velocity

u = Initial velocity

a = Acceleration

t = Time taken

Substituting the given values in the above formula, we get:

v = u + at

 = 4 + 0.5 × 30

 = 4 + 15

 = 19 m/s

Therefore, the final velocity of the scooter is 19 m/s.

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The water in both pots will boil at the same temperature as long as the pressure is consistent. Both pots' water will reach boiling point at the same temperature.

The point at which the pressure that a liquid is subjected to from its environment equals the pressure that the liquid's vapor is subjected to; in this situation, the addition of heat causes the liquid to turn into its vapor without rising the temperature.

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(i) The hydraulic gradient is 0.45.

(ii) The flow rate is approximately 0.00000167 cubic meters per second.

(iii) The hydraulic conductivity is approximately 0.000037 meters per second.

(i) Hydraulic gradient:

The hydraulic gradient (i) can be calculated by dividing the head difference (h) by the distance (L) between the manometer tappings:

i = h / L

Given:

Head difference (h) = 45 mm

Distance between manometer tappings (L) = 100 mm

Converting the units to meters:

h = 45 mm / 1000 = 0.045 m

L = 100 mm / 1000 = 0.1 m

Substituting the values into the formula:

i = 0.045 m / 0.1 m = 0.45

(ii) Flow rate:

The flow rate (Q) can be calculated using the equation:

Q = (V / t) / A

Where V is the quantity of water collected, t is the duration of the test, and A is the cross-sectional area of the test sample.

Given:

Quantity of water collected (V) = 500 ml = 0.5 L

Duration of test (t) = 300 seconds

Diameter of test sample (d) = 100 mm

Converting the units to meters:

V = 0.5 L = 0.5 / 1000 = 0.0005 m³

t = 300 seconds

d = 100 mm / 1000 = 0.1 m

Calculating the cross-sectional area (A) using the formula for the area of a circle:

A = π * (d/2)^2

Substituting the values:

A = π * (0.1/2)^2 = π * 0.005^2 = 0.00007854 m²

Substituting the values into the formula for flow rate:

Q = (0.0005 m³ / 300 s) / 0.00007854 m²

Calculating the flow rate:

Q = 0.00000167 m³/s

(iii) Hydraulic conductivity:

The hydraulic conductivity (K) can be calculated using Darcy's Law:

K = Q / (A * i)

Given the values we calculated:

Q = 0.00000167 m³/s

A = 0.00007854 m²

i = 0.45

Substituting the values into the formula:

K = 0.00000167 m³/s / (0.00007854 m² * 0.45)

Calculating the hydraulic conductivity:

K ≈ 0.000037 m/s

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Answer:

it’s the 2nd one

Explanation:

Answer:

second one

Explanation:

Answer:

333 mAmps      .33 A

Explanation:

v = ir

v/r = i

120 v / 360 ohm = .3333 A

Answer:

A). 0.33A

Explanation:

During a tennis volley, the force pair involved is the action-reaction forces.

When playing tennis and returning a volley, the force pair involved is the action and reaction forces. In the process of hitting the ball, the tennis racket exerts a force on the ball, which is the action force.

The ball, in turn, exerts an equal and opposite force on the racket, which is the reaction force.Both the racket and the ball experience the force of impact during the volley.

The force applied by the racket causes the ball to move forward, while the equal and opposite force applied by the ball pushes the racket back.

These two forces are referred to as action-reaction forces or force pairs. A force pair refers to a pair of forces that are equal in magnitude but opposite in direction.

These forces always act on different objects and occur simultaneously. In this scenario, the action force was exerted by the tennis racket while the reaction force was exerted by the ball.

Therefore, during a tennis volley, the force pair involved is the action-reaction forces.

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Answer:

probably when the next pandemic happens

Answer:its velocity changes

Explanation:

If we throw a socks in to the bowl then it is going with a few unfold situation by means of the projectile and follows the trajectory. Crumpled paper use for the projectile additionally works gud for the simulation.

Crumpled paper has irregular form and mild in weight and it is able to divert in a way by air force or by means of any other motive mild weight. hence simulation and projectile interest are interlinked to every different.

Projectile motion is used in many real-life applications such as designing rockets, ballistic missiles, and artillery, as well as in sports such as baseball, golf, and archery. The concept of projectiles is also relevant in fields such as engineering, military science, and sports. For example, the design of a projectile such as a bullet or missile can affect its accuracy and effectiveness, while knowledge of projectile motion can aid in the design of sports equipment such as golf clubs or javelins.

When a projectile is launched, it follows a curved path known as a trajectory, which is determined by the initial velocity, angle of launch, and the gravitational and atmospheric forces acting on it. The motion of projectiles is studied in physics, where concepts such as projectile motion, trajectory, range, and maximum height are analyzed.

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The angular acceleration of the pulley can be determined by considering the forces acting on the system and the moment of inertia of the pulley. Based on the task, the angular acceleration of the pulley is 2.45 rad/\(s^{2}\).

The angular acceleration of the pulley can be determined by considering the forces acting on the system and the moment of inertia of the pulley. The net force acting on the system is given by the weight of the hanging mass, which creates a tension in the rope that is transferred to the pulley. The tension in the rope produces a torque on the pulley, given by:

The tension in the rope produces a torque on the pulley, given by:

τ = T * r

where,

T = the tension in the rope

r = the radius of the pulley.

The net torque on the pulley can be used to determine its angular acceleration, given by:

α = τ / I

where,

I is the moment of inertia of the pulley, given by:

I = (1/2) * m * \(r^{2}\) + m * \(r^{2}\)

where m is the mass of the pulley.

Substituting the values, we get:

α = (T * r) / ((1/2) * m *  \(r^{2}\) + m *  \(r^{2}\))

= (5 * 9.8 * 0.5) / ((1/2) * 20 * \(0.5^{2}\) + 20 * \(0.5^{2}\))

= 49 / 20

= 2.45 rad/\(s^{2}\)

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Answer:

a) Eg = 3,060.72 j

b) Ek = 2,080 j

c) Etotal = 5,140.72 j

Explanation:

The given parameters are;

The mass of the person, m = 65 kg

The height of the person, h = 4.8 m

The speed of the person, v = 8.0 m/s

a) The gravitational potential energy, \(E_g\) = m·g·h

Where;

g = The acceleration due to gravity ≈ 9.81 m/s²

∴ Eg = 65 kg × 9.81 m/s² × 4.8 m = 3,060.72 j

Eg = 3,060.72 j

b) The kinetic energy, Ek = 1/2·m·v²

∴ Ek = 1/2 × 65 kg × (8.0 m/s)² = 2,080 j

Ek = 2,080 j

c) The constant total Mechanical Energy, Etotal = Eg + Ek

∴ Etotal = 3,060.72 j + 2,080 j = 5,140.72 j

Etotal = 5,140.72 j.

Answer:

false

Explanation:

most prototypes are and perfect and they are build to find our mistakes

My project is in the file attached, lots of thanks to Maxineishere for helping me with the essay. You may need adobe reader for this as the files are PDF files, I hope you are satisfied! :)

DATE ANSWERED: 5/8/2021

Answer:

Force = 3.06 Newton.

Explanation:

Given the following data;

Weight = 10N

Acceleration = 3m/s²

To find the force required;

First of all, we would determine the mass of the body.

Weight = mass * acceleration due to gravity

We know that acceleration due to gravity is equal to 9.8m/s².

10 = mass * 9.8

Mass = 10/9.8

Mass = 1.02 kg

Now, we can find the force required by using the formula below;

Force = mass * acceleration

Force = 1.02 * 3

Force = 3.06 Newton.

Answer:

I believe it is about 7.6 spm

Explanation:

40÷ 5.26 = 7.61904761904

The car's average speed is 7.62 m/s.

It's velocity can't be determined without knowing anything about it's position or direction.

A joint is not a wave-like undulation of rock layers in response to stress. False statement.

Instead, a joint is a type of fracture in rocks where there has been no significant displacement. The wave-like undulation you are referring to is called a fold, which occurs when rock layers are compressed and deformed under stress

A joint is a type of fracture or break in rock that occurs when there is no movement between the two sides of the fracture. Joints are formed in response to stresses such as tectonic activity or changes in temperature and pressure and are a common feature in many types of rocks.

While joints can sometimes give the appearance of a wave-like undulation in rock layers, this is not the same as a true wave-like undulation such as a fold or a fault. Folds are undulations in rock layers that result from compressive stresses that cause the layers to bend and deform, while faults are fractures in the rock where the movement has occurred along one side of the fracture relative to the other.

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From the given choices for force and motion, the best choice is B.

There is no external force acting on you at all. The external force is necessary in order for the body to lift.

The three forces acting on a body:

First: The normal force acting between the ground and feet.

Second: the muscle force hand between the hands and feet.

Third: weigh at the center of mass.

Your hands are pushing up against your feet, but your feet are pushing down against your hands.

Therefore, both forces cancel out, resulting in zero net external force on you.

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The integral of 1/(1 + x²) is (1/2)ln|1 + x²| + C where C is the constant of integration.

Integration is a mathematical process of finding the antiderivative of a function. To integrate the given expression 1/(1 + x²), we will use the substitution method.

Let u = 1 + x², du/dx = 2x dx, then dx = du/2x and the integral becomes:

∫1/(1 + x²) dx = ∫1/u * (1/2x) du= (1/2)∫1/u du

The antiderivative of 1/u is ln|u| + C, where C is the constant of integration.

Therefore, the final solution of the integral is (1/2)ln|1 + x²| + C.

Let us work through the steps:

Step 1:Let u = 1 + x² and then differentiate both sides with respect to x to obtain du/dx. du/dx = 2x

Substitute 2x dx = du into the integral ∫1/(1 + x²) dx to get the integral in terms of u:∫1/u * (1/2x) du = (1/2) ∫1/u du

Step 2:Calculate the antiderivative of 1/u, which is ln|u|. Thus, the final solution is (1/2)ln|1 + x²| + C, where C is the constant of integration. The constant C will vary depending on the initial conditions of the problem.

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