A girl launches a toy rocket from the ground. The engine experiences an average thrust of 5.26 N. The mass of the engine plus fuel before liftoff is 25.0 g, which includes fuel mass of 12.3 g. The engine fires for a total of 1.90 s.A. What is the average exhaust speed of the engine?B. This engine is placed in a rocket body of mass 60.5 g. What is the magnitude of the final velocity of the rocket if it were to be fired from rest in outer space by an astronaut on a spacewalk?

Answer:

amplitude is the answer

Explanation:

A) True.

Drivers should exercise extreme caution and reduce speed when traveling around playgrounds, parks, or schools as these areas are usually frequented by children, who may not always be aware of traffic rules and may suddenly enter the road. By reducing the speed, drivers will have better control of their vehicles and be able to react quickly to any unexpected situations. Therefore, it is important to exercise caution and reduce speed while driving around such areas.

The resultant velocity of the golf ball is 18.03 m/s

What is Resultant velocity?

An object's total vector velocity is the sum of its component vector velocities. The scalar product of an object's mass and acceleration vector equals the sum of the vector forces acting on it. If indeed the two objects stick together again after impact, divide the total momentum even by sum of the masses. You will then be given the two objects' resultant velocity as a result. In the aforementioned example, 50 would be divided by the total mass of the masses, which really is 10, yielding a speed of 5 metres per second.

Horizontal velocity= 10 m/s

Vertical velocity= 15 m/s

Resultant velocity= \(\sqrt{100+225}\) = \(\sqrt{325}\) = 18.03 m/s

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Answer:

it's answer is 117 N

F = Gm1m2/r^2

F = 6.67 * 10 ^-11 * 70 * 7.34 * 10 ^22/(1.71 * 10 ^6)^2

F = 117 N

hope it helps you

Answer:

I'm leaning twards A

Explanation:

Answer:

1N

Explanation:

Pretty simple Divide 23 by 23 which gives you 1.

23N ÷ 23N = 1N

Answer:

\(\sf \longmapsto \: 1 \: N\)

Explanation:

\(\sf \longmapsto \frac{23N}{23N} \)

\(\sf \longmapsto1 \: N\)

The potential energy is at the maximum when you reach the top of your jump on a trampoline. The correct answer is option B.

Potential Energy is the type of energy an object possesses by virtue of its position relative to others, stresses within itself, electric charge, and other factors. Potential energy exists in various forms, including gravitational potential energy, elastic potential energy, chemical potential energy, and electrical potential energy.

This type of energy can be converted into another type of energies. Examples, a charged battery has potential energy and it can be used as electrical potential energy. Petrol, diesel and and gas have chemical potential energy and be used as kinetic energy.

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Answer:

Only the car transforms electrical energy into more than one form of energy.

Explanation:

The motion of the car is mechanical energy but it can also transform into another energy witch is electrical energy

Answer: The Boat will rise

Explanation: Because high amplitude means high in heights.

1.Unit vector in the direction BA: BA/|BA| = (2/3, 2/3, 1/3)

2.The angular velocity (ω) of the body is given as 3 radians per second.

3.Without the position of point P given, it is not possible to write the position vector of P.

4.Left-handed rotation refers to the direction of rotation where the rotation follows the left-hand rule.

5.Position vector of point A: (4, 1, 1)

Position vector of point B: (2, -1, 0)

The direction vector BA = (-2, -2, -1)

1.To determine the unit vector pointing in the direction BA, we subtract the coordinates of point B from the coordinates of point A and normalize the resulting vector.

The direction vector BA is given by:

BA = (4 - 2, 1 - (-1), 1 - 0) = (2, 2, 1)

To obtain the unit vector in the direction of BA, we divide the direction vector by its magnitude:

|BA| = √(2^2 + 2^2 + 1^2) = √(4 + 4 + 1) = √9 = 3

Unit vector in the direction BA: BA/|BA| = (2/3, 2/3, 1/3)

2.The angular velocity (ω) of the body is given as 3 radians per second.

3.Without the position of point P given, it is not possible to write the position vector of P. Please provide the position of point P to proceed with the calculation.

4.Left-handed rotation refers to the direction of rotation where the rotation follows the left-hand rule. In a left-handed coordinate system, if you curl the fingers of your left hand in the direction of rotation, your thumb will point in the direction of the rotation axis. It is the opposite direction to a right-handed rotation.

5.The position vectors of points A and B are:

Position vector of point A: (4, 1, 1)

Position vector of point B: (2, -1, 0)

The direction vector BA can be obtained by subtracting the coordinates of point A from the coordinates of point B:

BA = (2 - 4, -1 - 1, 0 - 1) = (-2, -2, -1)

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The velocity of the 500-kg car after the collision is 3.4 m/s. Option C.

To find the velocity of the 500-kg car after the collision,

Momentum before collision = Momentum after collision

Before

500 kg × 5 m/s = 2500 kgm/s

400 kg × 2 m/s = 800 kgm/s

2500 kgm/s + 800 kgm/s

= 3300 kgm/s

After collision

500 kg × v m/s = 500v kgm/s

400 kg × 4.0 m/s = 1600 kgm/s

500v kgm/s + 1600 kgm/s = 3300 kgm/s

500v + 1600 = 3300

Solve for v:

500v = 3300 - 1600

500v = 1700

v = 1700 / 500

v = 3.4 m/s

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The two parts of the model that are missing are as shown in the diagram:

Oxygen is essential for cellular respiration, which is the process by which cells convert food molecules (such as glucose) into energy in the form of ATP (adenosine triphosphate). Cellular respiration occurs in the mitochondria of cells and is a complex series of metabolic reactions that requires oxygen as the final electron acceptor in the electron transport chain.

Without oxygen, cellular respiration cannot proceed beyond glycolysis, which is the first step in the process. Glycolysis breaks down glucose into two molecules of pyruvate and produces a small amount of ATP. However, this process is not very efficient, and it cannot sustain cellular activity for very long.

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Answer:

i think its c

Explanation:

trust me

Answer:

D. Mechanical waves in which the vibrations are parallel to the motion of the sound.

Explanation:

gg

Answer: D
Mechanical waves in which the vibrations are parallel to the motion of the sound.

Explanation:
just took

Answer:

In per second 186000

Explanation:

hope it will be right if not then your loss say nothing to me

The weight of the car the large piston can support is 300 N.

Weight can be defined as the gravitational pull on an object. Or it can be defined as the product of mass and gravity of an object.

To calculate the weight of the car the large piston can support, we use the formula below.

Formula:

Where:

Make F the subject of the equation.

From the question,

Given:

Substitute these values into equation 2

Hence, the weight of the car the large piston can support is 300 N.

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The current that flows through the 75 ohm resistor in the circuit shown below is 0.12A.

The current flowing through a circuit can be calculated using the Ohm's law equation as follows;

V = IR

Where;

According to this question, a circuit is shown in the above image. A 75 ohm resistor is given alongside a voltage of 9V. The current can be calculated as follows;

9 = I × 75

I = 0.12A

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Answer:

True

Explanation:

Igneous rocks can be either formed from cooled lava from above the ground or from magma

Answer:

Explanation:

There is no set way to do this. All you have to do is define left and right. Left will be minus and right will be the opposite --- plus.

That is completely arbitrary. It could be the other way around. It does not matter.

Left is minus so: - 600 N   is the force going left.

Right plus so: + 500 N

Now just add.

Net Force = +500 - 600

Net Force = - 100 N

So the Net Force is - 100 N going to the left.

The earthquake would occur 13 minutes before 10:05 a.m. which will be at 9.52 am.

The p-waves travel with a constant velocity of 7 km/s

The time can be calculated by using the formula

t = d / v

where

T1 =  10:05 a.m

d is the distance they take to travel from the epicenter

v is the speed of the p-waves

On average, the speed of p-waves is

v = 7 km/s

d = 5600 km (given)

Substituting the values in the formula;

t = d / v

t = 5600 ÷ 7

t = 800 seconds

Converting into minutes,

t = 800 ÷ 60

t = 13.3

≈ 13 mins

T1 -  13 mins = T2

10:05 - 13 mins = 9.52 am

It means the earthquake occurred prior 13 minutes, that is at 9.52 am.

Therefore, the earthquake occurred at 9.52 am.

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Explanation:

neutron star, any of a class of extremely dense, compact stars thought to be composed primarily of neutrons. Neutron stars are typically about 20 km (12 miles) in diameter. Their masses range between 1.18 and 1.97 times that of the Sun, but most are 1.35 times that of the Sun.

Answer:

Approximately \(4.7\; {\rm s}\).

Explanation:

Acceleration is the rate of change in velocity.

The initial velocity of this vehicle was \(v_{0} = 24\; {\rm m\cdot s^{-1}}\). After stopping, the velocity will be \(v_{1} = 0\; {\rm m\cdot s^{-1}}\). Hence, the change in the velocity of this vehicle will be:

\(\begin{aligned}\Delta v &= v_{1} - v_{0} \\ &= 0\; {\rm m\cdot s^{-1}} - 24\; {\rm m\cdot s^{-1}} \\ &= (-24)\; {\rm m\cdot s^{-1}} \end{aligned}\).

It is given that the vehicle decelerates at a constant rate of \(5.1\; {\rm m\cdot s^{-2}}\). Thus, the rate of change in the velocity of this vehicle (acceleration) will be negative (velocity is decreasing) at \(a = (-5.1)\; {\rm m\cdot s^{-2}}\).

To find the time required for this change in velocity, divide the change by the rate of change:

\(\begin{aligned}(\text{time required}) &= \frac{(\text{change})}{(\text{rate of change})} \\ &= \frac{\Delta v}{a} \\ &= \frac{(-24)\; {\rm m\cdot s^{-1}}}{(-5.1)\; {\rm m\cdot s^{-2}}} \\ &\approx 4.7\; {\rm s}\end{aligned}\).

Answer:

Explanation:

From https://epgna.com/stop-condensation-shipping-container

"[C]ontainer condensation occurs when the walls of a container become cooler than the dew point of the air found inside the container... Once this occurs, the moisture falls out of vapor into liquid form, which then builds and collects on the walls and roof"

Answer:

a) The acceleration of the sprinter is 6.521 meters per square second, b) The acceleration of 84512.16 kilometers per square hour.

Explanation:

Note: Statement is incomplete, complete description of the problem is: A sprinter accelerates from rest to \(9.00\,\frac{m}{s}\) in 1.38 seconds. What is his acceleration in a. \(\frac{m}{s^{2}}\) and b. \(\frac{km}{h^{2}}\)?

a) We assume that sprinter accelerates uniformly, so that acceleration (\(a\)), measured in meters per square second, can be obtained from this kinematic expression as function of initial and final velocities (\(v_{o}\), \(v\)), measured in meters per second, and time (\(t\)), measured in seconds, as well.

\(v = v_{o} + a\cdot t\)

\(a = \frac{v-v_{o}}{t}\)

If we know that \(v_{o} = 0\,\frac{m}{s}\), \(v = 9\,\frac{m}{s}\) and \(t = 1.38\,s\), the acceleration experimented by the sprinter is:

\(a = \frac{9\,\frac{m}{s}-0\,\frac{m}{s} }{1.38\,s}\)

\(a = 6.521\,\frac{m}{s^{2}}\)

The acceleration of the sprinter is 6.521 meters per square second.

b) If we know that a hour is equivalent to 3600 seconds and a kilometer is equivalent to 1000 meters, the result of the previous item is converted by using two consecutive unit conversions:

\(a = \left(6.521\,\frac{m}{s^{2}} \right)\cdot \left(\frac{1}{1000}\,\frac{km}{m} \right)\cdot \left(3600^{2}\,\frac{s^{2}}{h^{2}} \right)\)

\(a = 84512.16\,\frac{km}{h^{2}}\)

The acceleration of 84512.16 kilometers per square hour.

Below are the required answers and explanations for each of the scenarios listed.

1. A machine that pulls all thermal energy out of a refrigerated space: This violates the second law of thermodynamics. This is because the second law of thermodynamics states that no heat engine can have an efficiency of 100 percent, and no heat transfer can occur from a colder to a warmer object without external work being done.

2. A machine that can pull 1000J of heat out of a refrigerated space and into a warmer space without external work: This violates the second law of thermodynamics. The second law of thermodynamics states that no heat transfer can occur from a colder to a warmer object without external work being done.

3. A machine that can turn 1000J of heat directly into 1000J of electricity: This does not violate any of the laws of thermodynamics.

4. A machine that can create 1000J of heat from 100J of electricity: This does not violate any of the laws of thermodynamics.

5. A machine that can pull 1000J of heat out of a refrigerated space and put 1500J of heat into a warmer space if it uses 500J of external work: This does not violate any of the laws of thermodynamics.

a) Option 2 is correct answer.

b) Option  2 is correct answer.

c) Option 4 is correct answer.

d) Option 4 is correct answer

e) Option 4 is correct answer.

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Answer:

Italian astronomer Galileo Galilei provided a number of scientific insights that laid the foundation for future scientists. His investigation of the laws of motion and improvements on the telescope helped further the understanding of the world and universe around him.Nov 14, 2017

Explanation:

Answer:

below

Explanation:

First, convert 26.2 mi to km = 42.16 km

   then    42.16 km / 12 km/ hr = 3.51 hr   = 3 hr 30.8 m

Answer:

A object having kinetic energy is in motion state.And the object whi posses potential energy i s in state of podition.

Answer:

Objects are relative to other moving and stationary objects.

Kinetic energy can be transferred from one moving object to another.

Potential energy is stored energy in an object.