# If the brick stops in 4.40 , how much mechanical energy is lost?

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### Physics

A 6 kg brick is falling at a rate of 48.9 m/s toward the earth at a current height of 14 m. What is the total mechanical energy of the brick? (total mechanical energy= Eg+Ek+Eel) What is the answer in Joules?

### Physics

A 6 kg brick is falling at a rate of 48.9 m/s toward the earth at a current height of 14 m. What is the total mechanical energy of the brick? (total mechanical energy= Eg+Ek+Eel) What is the answer in Joules?

### physics

A 3.3 kg brick is falling at a rate of 35.1 m/s toward the earth at a current height of 14 m. What is the total mechanical energy of the brick?

### Physics

A 2 kg brick falls at 5.1 m/s from a height of 6 m above a spring that has a spring constant of 47 N/m. The brick strikes and compresses the spring until it stops moving. Ignore friction effects. How much is the spring compressed by the brick? Assume that there is no Eg after ...

### Physics

A 2 kg brick falls at 5.1 m/s from a height of 6 m above a spring that has a spring constant of 47 N/m. The brick strikes and compresses the spring until it stops moving. Ignore friction effects. How much is the spring compressed by the brick? Assume that there is no Eg after ...

### urgent (physics)

A 2 kg brick falls at 5.1 m/s from a height of 6 m above a spring that has a spring constant of 47 N/m. The brick strikes and compresses the spring until it stops moving. Ignore friction effects. How much is the spring compressed by the brick? Assume that there is no Eg after ...

### Physics

A rubber ball, with a mass of 40.0 grams is dropped from rest from a height of 1.60 m above the floor. It hits the floor, and then reaches a maximum height of 90.0 cm when it comes back up again. In this problem, use g = 10.0 m/s2. a) The collision with the floor causes some ...

### Physics

Aa particular bicycle is 25% effificent in converting the energy of a cyclist to mechanical energy (that is, she puts in four times as much energy as she gets out). if a cyclist is travelling along a pathway at a constant speed of 5.8 m/s for 1 h, and the aveage resistance is ...

### Physics

A basketball of mass 0.70 kg is dropped from rest from a height of 1.22 m. It rebounds to a height of 0.64 m. How much mechanical energy was lost during the collision with the floor? A basketball player dribbles the ball from a height of 1.22 m by exerting a constant downward ...

### Physics

a bike is 25% efficient in converting energy of the bicyclist to mechanical energy. If a cyclist is travelling along a pathway at a constant speed of 5.8 m/s for 3600 s, and the average resistance is 22 N, how much mass does she lose assuming 1 kg is lost for each 2.9 x 10^7 J...

### Physics

A 70.0 kg base runner begins his slide into second base while moving at a speed of 4.0 m/s. The coefficient of friction between his clothes and Earth is .70. He slides so that his speed is zero just as he reaches the base. How much mechanical energy is lost due to friction ...

### Physics

How much mechanical energy was lost during the ball's fall?

### Kinesology

A person performs a work task at a mechanical efficiency of 20 percent and at total energy output of 15kcal/min. How much energy(kcal/min) is lost as heat? and how much energy(kcal/min) is used to actually perform the work?

### Science

A person performs a work task at a mechanical efficiency of 20 percent and at total energy output of 15kcal/min. How much energy(kcal/min) is lost as heat? and how much energy(kcal/min) is used to actually perform the work?

### Science 8R - help (please read!!!)

Homework - Pick 4 out of the 6 forms (types) of energy and gives an example of each from your house. Types/Forms of Energy 1. Mechanical Energy 2. Electrical Energy 3. Electromagnetic Energy 4. Heat Energy 5. Chemical Energy 6. Nuclear Energy I'm picking heat and mechanical, ...

### Physics

A brick of mass 2.3 kg is lifted to a height of 1.9 m. How much gravitational potential energy is added to the brick? Acceleration due to gravity is g = 9.8 m/s2.

### physics

7. A 2000.0 kg boulder sits on the top of a 50.0 m cliff. As the boulder rolls off, it loses 3.0% of its mechanical energy as heat. How much heat energy goes the boulder lose? How much mechanical energy does the boulder have right before hits the ground?

### Physics

A 2.00 kg box slides down a rough incline plane from a height h of 1.99 m. The box had a speed of 2.77 m/s at the top and a speed of 2.34 m/s at the bottom. Calculate the mechanical energy lost due to friction (as heat, etc.) If I were to calculate the energy lost, it would be...

### Engineering science

A brick with a mass of 6kg is dropped vertically from a certain height.it takes 4,5 seconds for the brick to reach the ground.determine the ff.the height from which the brick is dropped and potential energy of the brick

### ap chemistry

a battery operated tool, such as a cordless drill, converts... a.) electrostatic energy to chemical potential energy b.) mechanical energy to thermal energy c.) thermal energy to mechanical energy d.) thermal energy to chemical potential energy e.) chemical potential energy to...

### physics

A 2 kg brick is accidentally dropped off some scaffolding from a height of 20 m above ground levele.Calculate how much potential energy it will have lost by th e time it hits the ground.

### Physics

A ball having a weight of 1.5 N is dropped from a height of 4 meters. (Neglect air friction.) How much mechanical energy is "lost" just before it hits the ground?

### Physics

A car (1100kg) skids up a hill inclined at 6 degrees. Its initial speed is 20m/s and skids 50m before stopping. When it stops, how high is it above where it started? How much potential energy did it gain? How much energy was lost to friction? What is the force of friction (...

### science

how should each form of energy be identified? A) energy A:gravitational energy /energy B:chemical energy B) energy A: nuclear energy/ energy B: electrical energy C) energy A: electromagnetic energy energy B:sound energy D) energy A: mechanical energy /energy B: thermal energy

### physics

I need help understanding these, please. Thanks! 1. A 2 kg body moves with constant velocity when a force of 10 N is applied. What is the coefficient of kinetic friction between the table and the body? (Would I use F=m*g for this??) 2. Which of the following statements is ...

### physics

a ball bounces to 60% of its original height.what fraction of its mechanical energy is lost in each bouces?where does this energy go?

### Mathematics

If a brick weighs exactly as much as a 9-pound rock plus falf of another brick, what does a brick and a half weigh?

### Mathematics

If a brick weighs exactly as much as a 9-pound rock plus falf of another brick, what does a brick and a half weigh?

### Physics

How will mechanical energy affect different points of oscillation on a vertical spring? Well i know that mechanical energy is PE and KE...So when the spring is compressed the mechanical energy will equal the PE and when extended or stretched it will equal KE. Does that answer ...

### physics

jack measured that his racquet gives a squash ball 45.0J of kinetic energy when he hits it with a particilar shot.he also measures that it has 18.0J of kinetic energy after one bounce off the court wall. what percentage of its mechanical energy does the ball lose while it ...

### Science again...

What other form is released by a radio. A. Heat Energy B. Mechanical Energy C. Ultraviolet Radiation UV? Can you get a tan from your radio? What is that sound...is it mechanical energy? IS the radio warm? Heat energy because c is something to do with the sun b is mechanical ...

### physics

Doyle goes bowling with a cement brick to improve his score. If the brick has a mass of 1.5kg and an initial speed of 5.0m/s upon release a)how much kinetic energy did it possess upon release i.e. when let it go and b)how far will the brick slide before coming to a halt if the...

### Physics

For non-ideal oscillators (such as a real pendulum) energy is lost and the amplitude (which is the maximum displacement) is no longer constant but also decreases with time. How fast the energy lost is described by a TIME CONSTANT, τ = m/b. Typically after ONE time ...

### physics

A 13.0 {\rm g} plastic ball is dropped from a height of 2.80 {\rm m} and is moving at 3.20 {\rm m/s} just before it hits the floor. How much mechanical energy was lost during the ball's fall? delta E mech = ____ J

### Physics

A ball of mass 1.74 kg is dropped from a height y1 = 1.47 m and then bounces back up to a height of y2 = 0.83 m. How much mechanical energy is lost in the bounce? The effect of air resistance has been experimentally found to be negligible in this case, and you can ignore it.

### IPC (different one)

Select all that apply. A 0.200-kilogram ball sits on a shelf 2.00 meters from the floor and then falls to a point 1.00 meter from the floor. Ignoring any affects due to friction, at this position _____. 1) its mechanical energy is 3.92 J 2) its potential energy is 3.92 J 3) ...

### Science

If an object's mechanical energy is equal to its potential energy, how much kinetic energy does it have? how do you know?

### 9th grade

at the top of a hill a rollercoaster has 67,500j of kinectic energy and 290,000j of potential energy. gradually the rollercoaster comes to a stop due to friction. If the rollercoaster has 30,000j of potential energy when it stops, how much heat energy is generated by friction ...

### Chemical thermodynamics

An iron balls is drop into a congrats floor from a height of 10m. On the first rebouce it rises to 0.5m. Assume that all the macroscopic mechanical energy lost in cotillion with the floor goes into the ball and that specific heat capacity of is 501.6J/kg°c during the ...

### 9th grade -physical science

a the top of a hill a rollercoaster has 67,500j of kinetic energy and 290,000j of potential energy. gradually the roller coaster comes to a stop due to friction. if the roller coaster has 30,000j of potential energy when it stops, how much heat energy is generated by friction ...

### math

A brick making company manufactures bricks with the same height and width. the volume of each brick is 108 cubic inches and the base area of each brick is 36 square inches. If the length of a brick is denoted as x and the height and width of the brick is denoted by y, find the...

### physics

A 2.48-kg rock is released from rest at a height of 28.1 m. Ignore air resistance and determine (a) the kinetic energy at 28.1 m, (b) the gravitational potential energy at 28.1 m, (c) the total mechanical energy at 28.1 m, (d) the kinetic energy at 0 m, (e) the gravitational ...

### physics

A 2.48-kg rock is released from rest at a height of 28.1 m. Ignore air resistance and determine (a) the kinetic energy at 28.1 m, (b) the gravitational potential energy at 28.1 m, (c) the total mechanical energy at 28.1 m, (d) the kinetic energy at 0 m, (e) the gravitational ...

### physics

A 3.56-kg rock is released from rest at a height of 15.2 m. Ignore air resistance and determine (a) the kinetic energy at 15.2 m, (b) the gravitational potential energy at 15.2 m, (c) the total mechanical energy at 15.2 m, (d) the kinetic energy at 0 m, (e) the gravitational ...

### Physics

A 79.0-kg fullback running east with a speed of 4.00 m/s is tackled by a 93.0-kg opponent running north with a speed of 3.00 m/s. (a) Why does the tackle constitute a perfectly inelastic collision? (b) Calculate the velocity of the players immediately after the tackle. ...

### soofia english medium

A brick has mass 600g and was lifted at the height of 12m with the speed of 9m/s. What energy was used to lift the brick?

### Physics

A 3.0 kg brick rests on a perfectly smooth ramp inclined at 34 above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant (force constant) of ...

### Physics

A 3.0 kg brick rests on a perfectly smooth ramp inclined at 34 above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant (force constant) of ...

### Physics

A 3.0 kg brick rests on a perfectly smooth ramp inclined at 34 above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant (force constant) of ...

### Physics

Pretend the hot brick extracts heat from the cold brick and becomes hotter. Would this violate the Law of Conservation of Energy?

### physics

At the top of a hill, a roller coaster has 67,500 J of kinetic energy and 290,000 J of potential energy. Gradually, the roller coaster comes to a stop due to friction. If the roller coaster has 30,000 J of potential energy when it stops, how much heat energy is generated by ...

### Science

A student is trying to identify the different forms of energy described in the following chart: Form of Energy Description Examples Energy A energy that travels in waves through space light radio waves Energy B energy that depends on the height of an object a person at the top...

### Physics

A 3.0-kg brick rests on a perfectly smooth ramp inclined at 34° above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant (force constant) of...

### Physics

A 3.0-kg brick rests on a perfectly smooth ramp inclined at 34° above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant (force constant) of...

### Physics

A 3.0-kg brick rests on a perfectly smooth ramp inclined at 34° above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant (force constant) of...

### Science

What is the main difference between mechanical and electromagnetic waves? A. Mechanical weaves involved transfers energy; electromagnetic waves do not B. Mechanical waves require a medium to travel in; electromagnetic waves do not***** C. mechanical waves have amplitude and ...

### Physics URGENT!!!

A 75.0 kg fullback running east with a speed of 6.00 m/s is tackled by a 82.0 kg opponent running north with a speed of 5.00 m/s. (a) Calculate the velocity of the players immediately after the tackle. (b)Calculate the direction of the players immediately after the tackle.(c)...

### physics

4. Two masses of 3 kg and 5 kg collide head-on, the former moving to the right with the speed 5 m/s and the latter moving to the left with the speed 3 m/s.After collision they stick together. What amount of mechanical energy is lost? 5. A cylinder with a uniform density is ...

### Science

A generator transforms A. Potential energy into kinetic energy B. mechanical energy into electrical energy***** C. Magnetic energy into electrical energy D. Friction into electrical energy Electrical charges that are different A. Attracts each other**** B. repel each other C. ...

### Physics

A 22kg child on a 1.75m long swing is released from rest when the swing supports make an angle of 35 degrees with the vertical. 1.What is the child's maximum potential energy? 2.Disregarding friction, find the child's theoretical speed at the lowest point. 3.If the actual ...

### science(check answers)

can someone check my answer thanks ! 2.The ability to do work or cause change is called A.velocity. B.energy.(I PICK B.) C.transfer. D.friction. 3.Which type of energy is demonstrated by a person jogging? A.electrical energy B.nuclear energy C.electromagnetic energy D.kinetic ...

### Science

Im sorry i am totally stumped What is the main difference between mechanical and electromagnetic waves A. Mechanical waves involve the transfer of energy; electromagnetic waves do not B. Mechanical waves require a medium to travel in; electromagnetic waves do not C. Mechanical...

### physics

A 30g bullet with a horizontal velocity of 500m/s comes to a stop 12 cm within a solid wall. a) what is the change in its mechanical energy? b) What is the magnitude of the average force from the wall stopping it? a) what would I use of the equation? Can you please explain ...

### Science

During the process of photosynthesis, solar energy is converted into: a. chemical energy. b. heat energy. c. thermal energy. d. mechanical energy. e. nuclear energy. a

### SCIENCE

A BRICK WITH MASS OF 6 KG IS DROPPED VERTICALLY FROM A CERTAIN HEIGHT. IT TAKES 4.5 SECONDED FOR THE BRICK TO REACH THE GROUND DETERMINE THE FF. THE HEIGHT FROM WHICH THE BRICK IS DROPPED THE SPEED OF WHICH THE BRICK THE GROUND IT AND THE MOMENTUM OF THE BRICK THE MOMENT JUST ...

### Physics

A satellite made of aluminum with mass 3500 kg travels on circulated path in 100 km height over the earth. Because of airresistance of the airveil the satellite loses energy and falls in a spiral down to earth. a) What is the mechanical energy of the satellite in the beginning...

### science

1. What is the main difference between mechanical and electromagnetic waves A. Mechanical waves involve transfer of energy; electromagnetic waves do not. B. Mechanical waves require a medium to travel in; electromagnetic waves do not. C. Mechanical waves have amplitude and ...

### physics

The student’s body is 22% percent eﬃcient; that is, for every 22 J that are converted to mechanical energy, 100 J of chemical energy are expended, with 78 J going into thermal energy. How much chemical energy is expended by the student during the climb? Answer in ...

### science

determine the period of motion when a ball dropped from a height of 4.40m makes a perfectly elastic collsion with the ground without any mechanical energy lost

### Science

Electromagnetic and mechanical waves have different characteristics that make them advantageous for certain applications. Select the reasons that mechanical waves, such as ultrasound, are used for soft tissue imaging and to identify fractures in metals. Question 1 options: ...

### physics work and energy

A basket of neglible wieght hangs from a vertical spring scale of constant force 1500N/m. If you sundally put a 3.0 Kg adobe brick in the basket, find the maximum distance that the spring will stretch. If, instead, you released the brick from 1.0 m above the basket, by how ...

### Physics

A 5.0-kg box at the top of a 400cm ramp slides down 200 cm. How much gravitational potential energy was lost as the box slides from the top of the ramp to the 200 cm mark of the ramp? A cheerleader is thrown vertically upward into the air. As the cheerleader rises, which one ...

### Physics

If a total mass of 11.1 kg falls 5.23 m and all of the mechanical energy is converted to internal energy, by how much will the internal energy of the water increase? The acceleration of gravity is 9.81 m/s 2 . Assume no energy is transferred as heat out of the vessel to the ...

### physics

Friction converts kinetic energy to a. mechanical energy b. potential energy c. nonmechanical energy d. total energy i don't think its B,..

### Physics

A 24.5N brick slides from rest down an 11.2m, 53.0 degree ramp with a meu=0.45. At the bottom, it strikes a stationary 36.8N brick, and then the two slide on together. How far will the two slide on a level surface with a coefficient of friction of 0.080? This problem must be ...

### physics

Q.1.Find the total mechanical energy in one time period? my sir says that it is (1/2)mw^2A^2 but according to me it should be 1/4mw^2A^2.How? Q.2.The total mechnical energy of a spring mass system in SHM is E = (1/2)mw^2A^2.Suppose the oscillating particle is replaced by ...

### physics

A particle B of mass 10g is shot vertically upward from a point O with velocity 10m/s. The horizontal plane containing O is the reference level of the gravitational potential energy .Neglect all air effects. a) Calculate the mechanical energy of the system at O. b) Calculate ...

### physics

A particle B of mass 10g is shot vertically upward from a point O with velocity 10m/s. The horizontal plane containing O is the reference level of the gravitational potential energy .Neglect all air effects. a) Calculate the mechanical energy of the system at O. b) Calculate ...

### science

Which of the following is not an example of potential energy? Chemical energy gravitational energy mechanical energy*** nuclear energy

### Geometry

A brick has a length of 22 cm and a width of 17 cm. If the volume of the brick is 3,740 cm3, then find the height of the brick

### calculus

A brick becomes dislodged from the top of a state building (at a height of 1290 feet) and falls to the sidewalk below. (a) Write the position, velocity, and acceleration functions of the brick. s(t) = v(t) = a(t) = (b) How long does it take the brick to hit the sidewalk? (c) ...

### physics

a brick is dropped (0 initial speed) from the top of a building. the brick strikes the ground in 2.5 seconds. you may ignore air resistant so the brick is in free fall. A)how tall in meters is the building? B) what is the magnitude of the brick's velocity just before it ...

### physics

A brick is dropped (zero initial speed) from the roof of a building. The brick strikes the ground in 3.05 s. You may ignore air resistance, so the brick is in free fall. (a) How tall, in meters, is the building? (b) What is the magnitude of the brick's velocity just before it ...

### physcis

A 100.0 kg base runner begins his slide into second base when he is moving at a speed of 4.70 m/s. The coefficient of friction between his clothes and Earth is 0.550. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical energy is lost due to...

### physics

Refer to the equation you derived in exercise (4). Assume that 1 y = 0.30m and 2 y = 0.10 m. What is the initial total mechanical energy if the pendulum is released from rest? What is the speed of the pendulum bob at the lowest point if the total mechanical energy is conserved?

### physic

Hi! please help A sledge loaded with bricks has a total mass of 17.8 kg and is pulled at constant speed by a rope inclined at 20.8° above the horizontal. The sledge moves a distance of 20.6 m on a horizontal surface. The coefficient of kinetic friction between the sledge and ...

### physics to be conceptualize

Which of the following statements are FALSE? Select all that apply. In an isolated system where only conservative forces cause energy changes, the kinetic energy and potential energy of the system can change, but the mechanical energy of the system cannot change. When the ...

### Physics

Find the heat that flows in 1 s through a lead brick 18 cm long if the temperature difference between the ends of the brick is 6.8° C. The cross-sectional area of the brick is 14 cm2.

### phsyics

A brick of mass 1.5 kg slides down an icy roof inclined at 30.0° with respect to the horizontal. (a) If the brick starts from rest, how fast is it moving when it reaches the edge of the roof 1.75 m away? Ignore friction. m/s ? (b) Redo part (a) if the coefficient of kinetic ...

### Science

A brick mass of 4.5 kg is thrown rertical into the air the brick leave the hand at a velocity of 10 m/s find the kinetic energy the moment it leave the hand?

### physics

A 66.0 kg base runner begins his slide into second base when he is moving at a speed of 4 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical energy is lost due to ...

### Physics

A 67.0 kg base runner begins his slide into second base when moving at a speed of 3.5 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. How much mechanical energy is lost due to friction ...

### Physics

A 69-kg base runner begins his slide into second base when he is moving at a speed of 3.7 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical energy is lost due to ...

### Physics

A 69-kg base runner begins his slide into second base when he is moving at a speed of 3.7 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical energy is lost due to ...

### Physics

A 66.0 kg base runner begins his slide into second base when moving at a speed of 4.4 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical energy is lost due to friction...

### physics

A)When the energy input to gas fired power station is 1000MJ,the electrical energy output is 300MJ.What is the efficiency of the power station in changing the energy in gas into electrical energy b)what form does the 700MJ of lost energy take c)what is the fate of the lost energy

### Physics

a fun loving 11.4kg otter slides up a hill and then back down to the same place. If she starts up at 5.75 m/s and returns at 3.75 m/s, how much mechanical energy did she lose on the hill and what happened to that energy

### Physics HELP!

A 85.0 kg base runner begins his slide into second base when he is moving at a speed of 2.10 m/s. The coefficient of friction between his clothes and Earth is 0.570. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical energy is lost due to ...

### Physics HELP!

A 85.0 kg base runner begins his slide into second base when he is moving at a speed of 2.10 m/s. The coefficient of friction between his clothes and Earth is 0.570. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical energy is lost due to ...