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Answer:

h = 18.41 m

Explanation:

Given that,

Mass of a test rocket, m = 11 kg

Its fuel gives it a kinetic energy of 1985 J by the time the rocket engine burns all of the fuel.

According to the law of conservation of energy,

PE = KE = mgh

h is height will the rocket rise

[tex]h=\dfrac{E}{mg}\\\\h=\dfrac{1985 }{11\times 9.8}\\\\h=18.41\ m[/tex]

So, the rocket will rise to a height of 18.41 m.

Answer:

B.) “Shininess” should be explained as “Light bounces off the moving electrons.”

Explanation:

Answer:

F = 3.2[N]

Explanation:

This problem can be solved by applying the principle of conservation of linear momentum, where the original momentum plus the momentum applied on the body, will be equal to the final momentum. This can be interpreted by means of the following equation.

[tex](m_{1}*v_{1})+(F*t)=(m_{1}*v_{2})[/tex]

where:

m₁ = mass of the ball = 2 [kg]

v₁ = initial velocity = 4 [m/s]

F = force applied [N]

t = time = 5 [s]

v₂ = final velocity = 12 [m/s]

Now replacing:

[tex](2*4)+(F*5)=(2*12)\\8+5*F=24\\5*F=24-8\\5*F=16\\\\F=3.2[N][/tex]

Answer:

try "socratic" it's an awesome app!

Explanation:

Answer:

|F| = 393750  N

Explanation:

Given that,

Total mass of the train, m = 750000 kg

Initial speed, u = 84 m/s

Final speed, v = 42 m/s

Time, t = 80 s

We need to find the net force acting on the train. The formula for force is given by :

F = ma

[tex]F=\dfrac{m(v-u)}{t}\\\\F=\dfrac{750000\times (42-84)}{80}\\\\F=-393750\ N[/tex]

So, the magnitude of net force is 393750  N.

Answer:

D

Explanation:

not sure but the answer is on quizlet . & i got a 100 so yeah

Deformation of the hood in a head-on collision- would increase the stopping distance and decreases the force on the occupants.

Therefore the correct answer is option D.

It is the type of collision in which the total momentum as well as the kinetic energy of the system is conserved.

In an elastic collision, the quantity's momentum is preserved because the momentum before and after the impact is equal.

In a head-on accident, deformation of the hood would lengthen the required stopping distance and lessen the force applied to the passengers.

The stopping distance increases which increases the time period and reduces the impact of the force.

Thus, the correct answer is option D.

Learn more about the collision from here, refer to the link;

brainly.com/question/2356330

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Answer:

proceesing

Explanation:

Answer:

predicting

Explanation:

for ap3x users

Answer:

the one with a higher mass

Explanation:

The body with more mass will have the greater kinetic energy of the two.

Kinetic energy is the energy due to the motion of body. It is mathematically expressed as:

           K.E  = [tex]\frac{1}{2}[/tex]  m v²

m is the mass

v is the velocity

 Since the velocity of the two bodies are the same, and mass is directly proportional to kinetic energy, the body with more mass will have a higher kinetic energy.

 So between mass m1 and mass m2, the one with a greater mass will have a higher kinetic energy

Answer:

the answer is gas if I'm not mistaken.

Explanation:

Don't come at me if I'm wrong please :')

Answer:

the answer is OD which says tge buoyant girce on an object is equal to the weight of th fluid

Explanation:

Qualitative is to observe and note a quality about something - like the paper airplanes are made out of "white" paper. White is a qualitative property.

Quantitative is to observe and measure a value - like the time of flight of a paper airplane.

Answer:

Hiiii

Explanation:

Helllooooooo

Answer:

The strength of gravity decreases.

An example of that would be if you were in space; you float around because there's no gravity.

Answer:

(2) the work required to move the electron is 4.8 x 10⁻¹⁹ J.

Explanation:

Given;

potential difference, V = 3.00 volts

charge of electron, q = 1.6 x 10⁻¹⁹ C

The work required to move an electron is calculated as;

W = Vq

where;

W is the work done in Joules

Substitute the given values and solve for W;

W = (3.00)(1.6 x 10⁻¹⁹)

W = 4.8 x 10⁻¹⁹ J.

Therefore, the work required to move the electron is 4.8 x 10⁻¹⁹ J.

Answer:

A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol.

Explanation:

In the metric system of measurement, designations of multiples and subdivision of any unit may be arrived at by combining with the name of the unit the prefixes deka, hecto, and kilo meaning, respectively, 10, 100, and 1000, and deci, centi, and milli, meaning, respectively, one-tenth, one-hundredth, and one-thousandth ...

Answer:

the answer is c

Explanation:

water is abiotic

Answer:

the answer is C

Explanation:

Its the only reaction with abiotic and biotic.

Answer:

The force that must be exerted on the pen is 0.0804 N.

Explanation:

Given;

pressure applied on a piece of paper by ball point of the pen, P = 0.067 N/mm²

surface area of the pen ball point, A = 1.2 mm²

The force that must be exerted on the pen is calculated as;

F = P x A

F = (0.067 N/mm²) x (1.2 mm²)

F = 0.0804 N

Therefore, the force that must be exerted on the pen is 0.0804 N.

Answer:

262.5Pa

Explanation:

Given parameters:

P1  = 175Pa

T1  = 300K

T2  = 450K

Unknown:

P2  = ?

Solution:

To solve this problem, we are going to use an adaptation of the combined gas law.

           [tex]\frac{P1}{T1}[/tex]    = [tex]\frac{P2}{T2}[/tex]  

  Insert the parameters and solve;

           [tex]\frac{175}{300}[/tex]    = [tex]\frac{P2}{450}[/tex]  

          P2 = 262.5Pa

The question is incomplete, the complete question is;

A body is displaced through a certain distance x by a force of 30newtons .if the workdone is100j and the displacement is in the direction of the force, what is the value of x

Answer:

3.33 m in the direction of the force

Explanation:

We say that work is done when the force applied moves an object by some distance in the direction of the force.

Hence;

Work = Force × displacement

Displacement = Work /Force

Displacement = 100 J/30 N

Displacement = 3.33 m in the direction of the force

Answer:

A water fall?

Explanation:

It's an example I took in my science class

"For example, when you exercise you get hot. The heat you feel in your body results from the energy transfers that happen when you move. When you sweat, your body expends energy to cool itself down. A food chain shows how energy flows from one organism to another."

Answer:

7.037 m/s

Explanation:

According to the law of energy conservation;

The total of the initial K.E = The total final K.E

This expression implies that:

[tex]\dfrac{1}{2}mv^2 = mgh + \dfrac{1}{2}mu^2[/tex]

By simplifying the above expression;

[tex]v^2 = 2gh + u^2[/tex]

where;

g = 9.81 m/s²

h = 2.50 m

u = 0.68 m/s

∴

[tex]v^2 = 2(9.81 \ m/s^2 )(2.50 \ m) + (0.68 \ m/s)^2[/tex]

[tex]v^2 = 49.5124 \ m^2/s^2[/tex]

[tex]v = \sqrt{ 49.5124 \ m^2/s^2}[/tex]

v = 7.037 m/s

Answer:

it increases drag

Explanation:

Explanation:

because it doesn't depend upon other unit like kg meter and second

Answer:

1²/3 hours or ⁵/3 hours

Explanation:

Time = Distance ÷Speed

Therefore time = 20miles ÷ 12 miles per hour

=⁵/3 hours

Answer: Any chemical reaction is an example of a chemical change. Examples include: Combining baking soda and vinegar (which bubbles off carbon dioxide gas)Jan 13, 2020

Explanation:

Answer:

1 hydrogen, 1 nitrogen and 3 oxygen atoms.

Explanation:

Answer:

Radiofrequency Ablation (RFA) which is a type of Electrical Energy is used to treat cancer. If it sees heat made by radio waves to kill cancer cells. Ablation means destroying completely. The method is putting RFA a probe (electrode) that goes through the skin into the tumor. A CT scan is needed so to check that the probe is in exactly the right place. An electrode in the probe creates radiofrequency energy to produce heat and kill the cancer cells.

Explanation:

Answer:

The destruction of cancer cells requires a lot of energy, so high-frequency radio waves can be used in this technology because they have high energy.

Explanation:

sample response edge2022

Answer: v = 40 m/5

Explanation:

40 J = 1/2 (105) v^2

1600 = v^2

v = 40 m/5

The velocity of the arrow weighing 50 g or 0.05 Kg to have a kinetic energy of 40 joules is 40 m/s.

Kinetic energy is the energy generated in a body by virtue of the motion of the body. It is dependent on the mass and velocity of the body by the relation written below:

Ke = 1/2 mv²

Given the mass of the arrow = 50 g = 0. 05 kg

kinetic energy = 40 J

Thus velocity of the arrow = √(2 Ke / m)

                                            = √(2 × 40 J / 0.05 Kg)

                                            = 40 m/s .

Therefore, the velocity of the arrow will be 40 m/s

To find more on kinetic energy, refer here:

https://brainly.com/question/26590527

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