a car is moving eastward and speeding up. the momentum of the car is

Answer:

Explanation:

The gravitational force on the ball when it is on the new planet is double the force on the ball when it is on Earth. The gravitational force on the ball when it is on the new planet is half the force on the ball when it is on Earth.

The total charge in the circuit is 240 microcoulombs.

To calculate the total charge in a series circuit with capacitors, we need to use the formula Q = CV, where Q represents the charge, C is the capacitance, and V is the voltage.

In this case, we have three capacitors connected in series with capacitances of 4 μF, 3 μF, and 2 μF, respectively. The voltage across the circuit is 260 V.

To find the total capacitance (C_total) in a series circuit, we use the reciprocal rule: 1/C_total = 1/C1 + 1/C2 + 1/C3. Plugging in the values, we get 1/C_total = 1/4 + 1/3 + 1/2.

Simplifying this equation gives us 1/C_total = (3 + 4 + 6)/12 = 13/12. Taking the reciprocal, we find C_total = 12/13 μF.

Now, we can calculate the total charge (Q_total) using Q = C_total × V. Substituting the values, we get Q_total = (12/13) μF × 260 V.

Calculating the numerical value, Q_total = (12/13) × 260 = 240 μC (microcoulombs).
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Answer:B) satellites

Explanation:

I just took the tests

A vector quantity has both magnitude and direction, and therefore, can be resolved into components

The magnitude of the vector, G is approximately 5 units

The value of the magnitude of the vector is correct for the following reason:

The given parameters are;

The direction in which the vector, G, is pointed, θ = 36.9° clockwise rotation from the positive y-axis

The x-component of the vector = 3

Required:

To find the magnitude of the vector

Solution:

Let |G|, represent the magnitude of the vector

Given that the angle, is measured from the y-axis, we have;

|G| × sin(θ) = The x-component of the vector

Therefore;

|G| × sin(36.9°) = 3

\(|G| = \dfrac{3}{sin(36.9^{\circ})} \approx 4.9965 \approx 5\)

The magnitude of the vector, G ≈ 5

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The action force is the oar against the water.

The reaction force is the water pushing back agrains the oar.

(i) The change in length is 8.78 x 10⁻⁸ m and the change in the width is -2.63 x 10⁻⁸ m

(ii) The change in volume of the bar is  7.53 x 10⁻¹¹ m³.

The bar undergoes elongation and reduction in cross-sectional area due to the applied loads.

Using the formula for longitudinal strain, we can calculate the change in length (ΔL) as follows:

ΔL = (180 × 10³ N) x (100 × 10⁻³ m) / (205 × 10⁹ N/m²)

ΔL = 8.78 x 10⁻⁸ m

The change in width (Δb) can be calculated using the formula for lateral strain:

Δb = -v x ΔL = -0.3 x  ΔL

Δb = -0.3 x 8.78 x 10⁻⁸ m

Δb = -2.63 x 10⁻⁸ m

The change in volume can be calculated as follows:

ΔV = (35 × 10⁻³ m)  x (35 × 10⁻³ m) x (ΔL + Δb)

ΔV =  (35 × 10⁻³ m) x  (35 × 10⁻³ m) x (ΔL - 0.3 x ΔL)

ΔV =  (35 × 10⁻³ m) x  (35 × 10⁻³ m) x (8.78 x 10⁻⁸m -2.63 x 10⁻⁸ m)

ΔV = 7.53 x 10⁻¹¹ m³

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Answer:

200

Explanation:

20m/s*10sec=200

The three ways a car can accelerate are change in velocity, change in direction, or both.

The rate of velocity change concerning time is known as acceleration. The acceleration of the object is;

\(\rm a = \frac{v-u}{t}\)

Here,

a is the acceleration

v is the final velocity

u is the initial velocity

t is the period

The three ways a car can accelerate are as follows;

a)Change in velocity.

b)Change in direction

c)Change in both velocity and direction.

Hence, the three ways a car can accelerate are change in velocity, change in direction, or both.

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The correct answer is 2.26 m.

Initial velocity of elevator u =0

Constant upward acceleration of the elevator a= 2.90 m/s²

Height of the bolt from the floor of the elevator h=3.00 m

Initial velocity of the bolt in the elevator u = 0 m/s

Elevator is moves upward with a constant acceleration 2.90 m/s²

so the net acceleration a' = (a+g) m/s²

=( 2.90 + 9.8) m/s²

a' = 12.7 m/s²

Initial velocity of the bolt u = 0 m/s

Distance traveled by the bolt h = 3.00 m

Substitute these values in the equation

h=ut+ 1/2 ( a )t², we get

3.00 = (0)x+1/2 (12.7)(t^2)

3.00 = 6.35 t²

t²= 3.00/6.35

t = 0.68 s

i.e., after 0.68 s the bolt reaches the floor of the elevator.

(b)For the observer in the elevator acceleration

a'=(a+g) m/s²

=( 2.90 + 9.8) m/s²

a'= 12.7 m/s²

Time taken bolt to reach the floor of the elevator t = 0.68 s From the equation v=u+a't we get

v=(0)+(12.7) (0.68)

v = 8.636 m/s

Velocity of the bolt when it reaches the floor of the elevator according to an observer into elevator 8.636 m/s

ii) An observer standing on the floor landings of the buildings: for observer standing on the floor landing, the acceleration of the

bolt

appears a = g m/s²

= 9.8m/s²

Time taken the bolt to reach the floor t = 0.68 s

Initial velocity of the bolt u = 0 m/s

Substitute these values in the equation

v=u+at we get

v=0+(9.8) (0.68 s)

v= 8.636 m/s

Velocity of the bolt when it reaches the floor of the elevator according to

an observer standing on the floor landing = 8.636  m/s

c) i) According to an observer in the elevator in this situation acceleration a= 12.7 m/s²

time t= 0.68 s initial velocity u = 0

substitute these values in the equation 1

s = ut +1/2 at²

We get

s =(0) (0.659)+1/2(12.7 ) (0.68)²

= 2.93 m

Distance traveled by the bolt according to the observer on the elevator 2.93 m

iii)According to an observer standing on the floor landing in this situation

acceleration a=g m/s²

= 9.8m/s²

Time t= 0.68 s

Initial velocity u = 0 m/s Substitute these values in the equation

1 ut + 1/2 at ²,

s=ut+1/2at²

we get

s=(0)+1/2(9.8) (0.68)²

= 2.26 m

Distance traveled by the bolt according to the observer standing on the floor landing 2.26 m.

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Answer:

Hello! Your answer would be, O False

Explanation:

Hope I helped! Brainiest plz!♥ Have a nice morning! Hope you make a 100%! -Abby

Answer:

False is the correct answer.

Explanation:

plz mark me as brainliest.

The Big Bang theory is the most widely accepted explanation for the origins of the universe, but it does not necessarily imply that the universe emerged from nothing.

It is possible that new discoveries or insights may shed light on this fundamental question in the future. The universe may have arisen from a pre-existing state or through some other natural process that we do not yet understand.

Instead, the theory describes how the universe underwent a rapid expansion from a very dense and hot state. The conditions and laws of physics that applied during the earliest moments of the universe may not necessarily be the same as those we observe today, and there are many unknowns and uncertainties in our understanding of these early stages.

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Answer:

(a) the velocity of the shirt is 2.14 m/s

(b) the velocity of the shirt is 5.3 m/s

Explanation:

Given;

initial velocity of the shirt, u = 5.3 m/s

height of the platform above the ground, h = 4.00 m

(a) When the shirt is caught by someone whose hand is 5.20 m from the ground level, the height traveled by the shirt = 5.2 m - 4.0 m = 1.2 m

The velocity at this position is calculated as;

\(v^2 = u^2 + 2(-g)h\\\\v^2 = u^2 - 2gh\\\\v^2 = 5.3^2 - (2\times 9.8 \times 1.2)\\\\v^2 = 4.57\\\\v= \sqrt{4.57} \\\\v = 2.14 \ m/s\)

(b) When the shirt is caught by someone whose hand is 4.00 m from the ground level, the height traveled by the shirt = 4.00 m - 4.00 m = 0 m

The velocity at this position is calculated as;

\(v^2 = u^2 + 2(-g)h\\\\v^2 = u^2 - 2gh\\\\v^2 = 5.3^2 - (2\times 9.8 \times 0)\\\\v^2 = 28.09\\\\v= \sqrt{28.09} \\\\v = 5.3 \ m/s\)

Answer:

When meteoroids enter Earth's atmosphere (or that of another planet, like Mars) at high speed and burn up, the fireballs or “shooting stars” are called meteors. When a meteoroid survives a trip through the atmosphere and hits the ground, it's called a meteorite.

Explanation:

Answer: Meteoroid: Small particle from a comet or asteroid orbiting the Sun. Meteor: The light phenomena which results from a meteoroid entering the Earth's atmosphere and vaporizing; this is basically a shooting star. Meteorite: A meteoroid that survives through the Earth's atmosphere and lands on the Earth's surface.

The MA, VR and efficiency of the screw nail will be 20, 176 and 11.36%, respectively.

Mechanical advantage (MR) is the ratio between the load and effort.

Velocity ratio (VR) of a simple machine is the ratio of distance travelled by effort to the distance travelled by the load in the machine.

The efficiency of a simple machine can be defined as the ratio of useful work done by the machine (output work) to the total work put into the machine (input work).

We need to make 14 cm of diameter of the screw. Then, we can solve the problem.

Suppose the effort applied on screw is (E) = x

Then, The force is (F) = 20x

MA = F/E

MA = 20x/x (x and x are cancelled)

MA = 20

Then,

VR = 2πR/ p

VR = 2×22×0.14/7×0.05

VR = 176

and

efficiency = MA/VR × 100

efficiency = 20/176 × 100 = 11.36

Therefore, the efficiency is 11.36.

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Answer:

D - Water

Explanation:

The relative density of aluminum is 2.7. This means that aluminum is 2.7 times denser than water, which is the reference substance often used for comparing densities

The relative density (also known as specific gravity) of a material is the ratio of its density to the density of a reference substance. In this case, we are given the density of aluminum as 2.7 x 10^3 kg/m^3.

To find the relative density, we need to compare it to the density of the reference substance. The most commonly used reference substance for relative density is water, which has a density of 1000 kg/m^3.

Relative density = Density of the material / Density of the reference substance.Relative density = (2.7 x 10^3 kg/m^3) / (1000 kg/m^3)

Relative density = 2.7

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Answer:

14.68m/s

Explanation:

As per the question, the data provided is as follows

Mass = M = 0.148 kg

Height = h = 11 m

Initial velocity = U = 0 m/s

Final velocity = V

Gravitational force = F

Mass = M

Based on the above information, the speed that hit to the ground is

As we know that

Work to be done = Change in kinetic energy

\(F ( S) = (\frac{1}{2} ) M ( V^2 - U^2 )\)

\(M g h = (\frac{1}{2} ) M ( V^2 - U^2 )\)

\(g h = (\frac{1}{2} ) ( V^2 - U^2 )\)

\(V^2 - U^2 = 2gh\)

\(V^2 - 0 = 2gh\)

\(V = \sqrt{2 g h}\)

\(= \sqrt{2\times9.8\times11}\)

= 14.68m/s

The net force acting on the particle would be and the magnitude of the force would be -12.92i + 6.49j and the magnitude of the force would be 14.46 Newtons.

Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.

The net force on the particle = mass of the particle × acceleration

                                                =3.80*(−3.40i + 1.70j)

                                                = -12.92i + 6.49j

Thus, the magnitude of the net force on the particle would be 14.46 Newtons.

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The acceleration of the elevator is -2.2 m/s2 downwards.

Acceleration is a vector quantity that describes the rate of change of an object's velocity over a period of time. It is measured in metres per second squared (m/s2). Acceleration is not the same as speed, which is the rate at which an object moves in a particular direction. Acceleration can be either positive (speeding up) or negative (slowing down) and is caused by an applied force, such as friction or gravity. The acceleration of an object changes with time and is dependent on the object's mass, drag, and the force that is applied to it.

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Answer:

support lights as a wave

Explanation:

In the model of light as a particle, the experimenter would expect to see one small hole of light emerging on the wall. However, as the light spreads out, it behaves much like a wave that diffracts when going through a small hole.

Answer:

(1.8 × 10^9) meters in one minute

Explanation:

To determine how far light can travel in one minute, we need to multiply its speed by the number of seconds in a minute.

The speed of light is 3 × 10^8 meters per second.

There are 60 seconds in a minute.

Therefore, the distance light can travel in one minute is:

Distance = Speed × Time

Distance = (3 × 10^8 meters per second) × (60 seconds)

Calculating this, we get:

Distance = 3 × 10^8 meters/second × 60 seconds

Distance = 18 × 10^8 meters

Distance = 1.8 × 10^9 meters

So, light can travel approximately 1.8 billion (1.8 × 10^9) meters in one minute.

Answer:

laws ig .

Explanation:

Answer:

a

Explanation:

ajjkiikkkkkhglutfgkitfgghiiij

Answer:

Acceleration = 8.27 cm/s²

Explanation:

We are given;

initial velocity; v_i = 10.5 cm/s

Initial position; x_i = 2.72 cm

Time; t = 2.30 s

final position; x_f = 5.00 cm

To find the acceleration, we will make use of the formula;

x_f - x_i = (v_i * t) - (½at²)

Plugging in the relevant values, we have;

5 - 2.72 = (10.5 × 2.3) - (½ × a × 2.3²)

2.28 = 24.15 - 2.645a

24.15 - 2.28 = 2.645a

2.645a = 21.87

a = 21.87/2.645

a = 8.27 cm/s²

Answer:

Explanation:

I will us θ as the angle above horizontal as I don't know how to make your chosen symbol for angle.

           KEy = PE

½m(vsinθ)² = mgh

                h = (vsinθ)²/2g

Birds underwent significant diversification and adaptation during the Mesozoic epoch, allowing them to develop into effective and adaptable flyers.

The wings of S. crossirostris, also referred to as the "delicate-winged pterosaur," were constructed of a delicate flap of skin called the patagium. This delicate membrane was prone to breaking, unlike the stiff feathers of birds.

In terms of flight prowess and ecological success, S. crossirostris would not have been able to compete with birds due to the restrictions imposed by its delicate wing structure.

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Answer:

deformation : elastic deformation is reversed when the force is removed. inelastic deformation is not fully reversed when the force is removed – there is a permanent change in shape.

Explanation:

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Answer:

jeukuruleykeg

Explanation:

jgeegjeyjeyjeyjeykegk

Explanation:(2.5kg) (7.5) m/s +70 kg(0) =(2.5kg +70 kg (v3) 18. 75 =72.5 =v3

Yes, if a body is floating in a liquid, the rise in the liquid level is equal to the body height. This phenomenon is known as Archimedes' principle.

Archimedes' principle says when a body is immersed in a fluid (liquid or gas), it experiences an upward buoyant force equal to the weight of the fluid displaced by the body. Buoyant forces act in the opposite direction to gravity.

When a body floats in a liquid, it displaces a volume of liquid equal to its volume. As a result, the liquid level rises by an amount equal to the height of the submerged part of the body.

This principle holds for objects that float or are partially immersed in a liquid, such as a buoyant boat or a floating object. However, if the body sinks completely into the liquid, the liquid level rise will no longer be equal to its height. Instead, it depends on the density and volume of the submerged object.