Find the acceleration of a 600 kg car that experiences an impulse of 18,000 kgm/s in 0.05 seconds.

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when striking, the pike, a predatory fish, can accelerate from rest to a speed of 4 m/s in 0.11 s. (a)the acceleration of the pike during the strike is approximately 36.36 m/s².(b)The pike moves approximately 0.022 meters (or 2.2 cm) during the strike.

a. To find the acceleration of the pike during the strike, we can use the equation:

acceleration = (final velocity - initial velocity) / time

Given that the initial velocity (u) is 0 m/s, the final velocity (v) is 4 m/s, and the time (t) is 0.11 s, we can substitute these values into the equation:

acceleration = (4 m/s - 0 m/s) / 0.11 s

Simplifying the calculation:

acceleration = 4 m/s / 0.11 s

acceleration ≈ 36.36 m/s²

Therefore, the acceleration of the pike during the strike is approximately 36.36 m/s².

b. To determine the distance the pike moves during the strike, we can use the kinematic equation:

distance = initial velocity × time + (1/2) × acceleration × time²

Since the initial velocity (u) is 0 m/s, the time (t) is 0.11 s, and the acceleration is 36.36 m/s², we can substitute these values into the equation:

distance = 0 m/s × 0.11 s + (1/2) × 36.36 m/s² × (0.11 s)²

Simplifying the calculation:

distance = 0 m + (1/2) × 36.36 m/s² * 0.0121 s²

distance ≈ 0.022 m

Therefore, the pike moves approximately 0.022 meters (or 2.2 cm) during the strike.

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Answer: 36 m/s

Explanation:

Wave speed = Wavelength * Frequency

12 * 3 = 36 m/s

Answer: 36 m/s

Explanation:

Answer:

c. postive

Explanation:

All physical objects are made up of atoms. Inside an atom are protons, electrons and neutrons. The protons are positively charged, the electrons are negatively charged, and the neutrons are neutral.

Therefore, all things are made up of charges. Opposite charges attract each other (negative to positive). Like charges repel each other (positive to positive or negative to negative). Most of the time positive and negative charges are balanced in an object, which makes that object neutral.

Static electricity is the result of an imbalance between negative and positive charges in an object. These charges can build up on the surface of an object until they find a way to be released or discharged. One way to discharge them is through a circuit.

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Answer:

C

Explanation:

C because if you build anything up it remains the same.

Answer:

0.16 A

Explanation:

V = IRtotal

24V = I(100 + 40 + 10)

I = 0.16 A

Answer: 0.16 is correct

Explanation:

Answer:

See below

Explanation:

Your 'friend ' IS electrically grounded....so the electric charge will flow from you through your friend to the ground.....likely BOTH of you will feel a shock.

Answer:

 v₀ = 11.72 m / s

Explanation:

This is a missile launch exercise. Let's write the relations for the final position

        x = v₀ₓ t

        y = \(v_{oy}\) t - ½ g t²

Let's use trigonometry to find the initial velocities

      sin 45 = v_{oy} / v₀

      cos 45 = v₀ₓ / v₀

      v_{oy} = v₀ sin 45

     v₀ˣ = v₀ cos45

we substitute

      x = v₀ cos 45 t

      y = v₀ sin 45 t - ½ g t²

     in this equation system we have two unknowns and two equations for which it can be solved, let's substitute the values

     7 = v₀ 0.707 t

     3.5 = v₀ 0.707 t - ½ 9.8 t²

we clear the time in the first equation and substitute in the second

     3.5 = v₀ 0.707 (7 / v₀ 0.707) - 4.9 (7 / v₀ 0.707) 2

     3.5 = 7 - 480.345 / v₀²

      480.345 / v₀² = 7-3.5

      v₀² = 480.345 / 3.5

      v₀ = √ 137.24

      v₀ = 11.72 m / s

All we need to do in order to find out the direction is to take into account the sign of the charge. As they are both positive, the particles will repel each other, which can be seen on the following drawing:

Thus, particle q2 will try to push particle q1 to the left

The answer is: -

The accelerometer measures acceleration, including the force of gravity. In a stationary position, the accelerometer should read an acceleration value close to 9.8 m/s² in the vertical direction (Ay axis) because it is sensing the gravitational force pulling downward.

The other two axes (Ax and Az) should be close to 0 since there is no significant movement or acceleration in those directions. On the other hand, a gyroscope measures angular velocity, which indicates rotational motion. In an ideal scenario, where the device is not experiencing any rotation, the gyroscope values should be essentially 0 on all three axes (X, Y, and Z).

When the device is rotated counterclockwise and then back clockwise, the gyroscope data will reflect the change in angular velocity. If the device is rotated counterclockwise, the gyroscope will detect a positive angular velocity along the corresponding axis. Conversely, if the device is rotated clockwise, the gyroscope will register a negative angular velocity. The gyroscope data values will indicate the magnitude and direction of the rotation, with positive values corresponding to counterclockwise rotation and negative values corresponding to clockwise rotation.

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The increase in the average kinetic energy of the ball causes the increase in the temperature of the ball.

Kinetic energy of a particle is directly proportional to its temperature.

A ball initially at rest acquires kinetic energy when an external force is applied to it. As the person strikes the ball with a bat, the ball gains momentum which increases its kinetic energy of the ball.

Temperature on the other hand, is the measure of the average kinetic energy of a particle. Consequently, as the kinetic energy of the ball increases, the temperature of the ball increases as well.

Thus, we can conclude that the increase in the average kinetic energy of the ball causes the increase in the temperature of the ball.

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To calculate the resultant velocity of the plane, we would:

Thus, the correct options are B and C.

To calculate the resultant velocity of the plane, we need to use the Pythagorean theorem, which states that the square of the hypotenuse of a right-angled triangle is equal to the sum of the squares of the other two sides. The two velocity components of the plane, 85 km/h and 45 km/h, are perpendicular to each other, so we can use the Pythagorean theorem to find the resultant velocity.

The equation for the Pythagorean theorem is:
c² = a² + b²

Where c is the hypotenuse, and a and b are the other two sides. In this case, the hypotenuse is the resultant velocity, and the other two sides are the two velocity components of the plane.

So, the equation becomes:
resultant velocity² = (85 km/h)² + (45 km/h)²
resultant velocity² = 7225 + 2025
resultant velocity² = 9250
resultant velocity = √9250
resultant velocity = 96.17 km/h

Therefore, the resultant velocity of the plane is 96.17 km/h.

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The displacement of the plane is equal to 809 Km.

The displacement can be defined as the shortest distance between two points on the path. The displacement is a vector parameter because it has both direction and magnitude. The displacement may be positive, negative, or zero as well as can change with time.

Consider that A is Pittsburg, B is Charlotte and C is Orlando as shown below:

A------------------B---------------C

Given, the distance between Pittsburg to Orlando, AC = 1562 Km

The distance  from Orlando to Charlotte, BC = 753 Km

Displacement is the distance between the starting point (Pittsburg) and the ending point (Charlotte).

Displacement of the plane, AB = AC - BC = 1562 - 753 = 809 Km

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The speed of the moving train is approximately 33.5 m/s.

The beat frequency is given by the difference in frequency between the two horns, which is equal to the Doppler shift in frequency due to the motion of the moving train. Using the formula for the Doppler effect, we can solve for the speed of the train:

\(f_b = f_s\dfrac{(v + v_o)}{(v + v_s)}\)

where \(f_b\) is the beat frequency, \(f_s\) is the horn frequency, v is the speed of sound, \(v_o\) is the observer's speed, and \(v_s\) is the speed of the source.

We know that \(f_s\) = 410 Hz and \(f_b\) = 35 Hz. The speed of sound in air at standard temperature and pressure is approximately 343 m/s. Since the observer is stationary, \(v_o\) = 0.

Solving for \(v_s\), we get:

\(v_s = \dfrac{(f_s + f_b)}{f_s - 1} \times v\)

\(v_s\) = ((410 Hz + 35 Hz) / 410 Hz - 1) * 343 m/s

\(v_s\) = 33.5 m/s

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Answer:0.46 m/s^2.

Explanation:

The acceleration of the dog can be calculated by using the formula:

acceleration = (final velocity - initial velocity) / time

The initial velocity of the dog was 3 m/s, the final velocity was 9 m/s, and the time was 13 seconds.

acceleration = (9 m/s - 3 m/s) / 13 s = 0.46 m/s^2

Therefore, the acceleration of the dog was 0.46 m/s^2.

The correct option is option A) It stays constant.The horizontal component of the velocity will remain constant with time after the projectile is fired.

Projectile motion is the movement of an object that has been thrown, launched, or shot into the air. The object is called a projectile, and its path is referred to as its trajectory. Projectile motion can be predicted and analyzed by physics, but it is not as straightforward as it may seem. The following are some of the properties of projectile motion: Acceleration due to gravity (9.8 m/s²) Act of the horizontal and vertical components of velocity (v) Path of the projectile in a parabolic shape. The horizontal component of the velocity will remain constant with time after the projectile is fired.

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Explanation:

To solve this problem, we can use the formula:

ΔL = αLΔT

where ΔL is the change in length, α is the linear expansivity coefficient of brass, L is the original length of the brass rod, and ΔT is the change in temperature.

Given:

α = 2.0 × 10^-5 K^-1 (linear expansivity coefficient of brass)

L = 10.0 m (original length of the brass rod)

ΔT = 41°C - 30°C = 11°C (change in temperature)

Using the formula:

ΔL = αLΔT

ΔL = (2.0 × 10^-5 K^-1) × (10.0 m) × (11°C)

ΔL = 0.0022 m

Therefore, the new length of the brass rod at 30°C will be:

L' = L + ΔL

L' = 10.0 m + 0.0022 m

L' = 10.0022 m

So, the new length of the brass rod at 30°C will be approximately 10.0022 meters.

The output power in mW is 3.98 mW. In this communication system, the input power is 100 mW, and the system has a total gain of 20 dB and a total loss of -13 dB.

For calculating the output power, first, convert the gain and loss values from dB to a linear scale.

The gain of 20 dB can be converted to a linear scale using the formula:

\(Gain (linear scale) = 10^{(Gain (dB) / 10)}.\)

So,\(Gain (linear scale) = 10^{(20/10)} = 100.\)

Similarly, the loss of -13 dB can be converted to a linear scale using the formula:

\(Loss (linear scale) = 10^{(Loss (dB) / 10)}.\)

So,\(Loss (linear scale) = 10^{(-13/10)} = 0.0501.\)

Now, calculate the output power by multiplying the input power by the gain and dividing it by the loss.

Output power = (Input power) * (Gain (linear scale) / Loss (linear scale))

= 100 * (100 / 0.0501) = 3.98 mW.

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Answer:

A.

Explanation:

The X-Axis is always on the left side.

It accelerates at about 32 feet per second every second, so it starts falling at zero feet per second and, one second later it is traveling at 32 feet per second. That means that its average speed is 16 feet per second, so it will fall 16 feet in the first second.

Finally, for a mass tied to a string to act as a simple pendulum, the acceleration due to gravity must be constant, and there should be minimal air resistance.

(a) A simple pendulum is a mass suspended from a fixed point by a string or rod, which is allowed to swing back and forth under the influence of gravity. The motion of a simple pendulum is periodic, with a period that depends on the length of the pendulum and the acceleration due to gravity.

(b) No, a baseball bat does not make a simple pendulum. To act as a simple pendulum, the suspended mass must be concentrated at a single point, and the string or rod must be attached to that point. A baseball bat is not a concentrated mass, and its center of mass is not located at a single point. Therefore, it cannot be used as a simple pendulum.

(c) An oscillating mass tied to a string constitutes a simple pendulum when the mass is concentrated at a single point and the string or rod is attached to that point. Additionally, the mass must be small enough and the angle of displacement from the vertical must be small enough that the motion of the pendulum can be described by a simple harmonic motion equation, which assumes that the motion is sinusoidal and that the amplitude of the motion is small. The length of the string or rod also affects the period of the pendulum, with longer lengths resulting in longer periods.

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Answer:

B. different temperatures

Explanation:

Thats how they transfer energy because if one object is hotter then the other, the heat can still be transfer to the other object and make their temperatures the same

Answer:

In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed. ... All chemical reactions are reversible although this can be difficult in practice.

Explanation:

Answer:In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed. ... All chemical reactions are reversible although this can be difficult in practice.

Explanation:

If a space rover has a mass of 3900 kg on Earth, then its mass when it lands on Mars will be the same i.e. 3900 kg.

Mass is the amount of matter present in the object.

The mass of the object is always constant, anywhere it is on the Earth or Moon or any other planet.

Thus, If a space rover has a mass of 3900 kg on Earth, the mass on Mars when it lands will be 3900kg.

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The definition of mass is: Mass is a measure of how much matter there is in a substance. So, option (c) is correct.

In physics, mass is a quantitative measurement of inertia, a basic characteristic of all matter. It essentially refers to a body of matter's resistance to changing its speed or location in response to the application of a force.

The change caused by an applied force is smaller the more mass a body has. The kilogram serves as the unit of mass in the International System of Units (SI).

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Answer: decreases

Explanation:

AP Physics 1 is a college-level introductory physics course designed to give high school students an understanding of the fundamental principles of physics.

The course covers topics such as mechanics, waves, thermodynamics, electricity, and magnetism. Students in AP Physics 1 learn to think critically and solve problems using scientific inquiry, experimentation, and analysis. The course is structured to provide students with hands-on laboratory experience and to develop their skills in using math and quantitative analysis to explain physical phenomena. At the end of the course, students take an exam that can qualify them for college credit and demonstrate their mastery of the concepts and skills covered in the course.

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Answer:

A scalar is a quantity that is fully described by a magnitude only. It is described by just a single number. Some examples of scalar quantities include speed, volume, mass, temperature, power, energy, and time.

Examples of scalar quantity are:

Distance.

Speed.

Mass.

Temperature.

Energy.

Work.

Volume.

Area.

Explanation:

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