A cyclist in a race must climb a 5° hill at a speed of 8 m/s. If the mass of the bike and the biker together is 80 kg, what must be the power output of the biker to achieve the goal?
Q: Power is defined as the energy used divided by the work the work done times the distance of motion…
A: According to question we need to define power .
Q: A box has a mass of 7.4 kg. The box is lifted from the garage floor and placed on a shelf. If the…
A: Mass of box =7.4 kg Potential energy when box is lifted to shelf =277 J
Q: A 1400kg car accelerates from 5 m/s to 25 m/s .Then net work done by the car is?
A: Given Mass m = 1400 kg Initial velocity u = 5 m/s Final velocity v = 25 m/s
Q: An object has kinetic energy of 85 J. If its speed is 4.2 m/s, what is its mass?
A:
Q: A force of 35 N is applied to a 15.3 kg object. The object moves 3.69 m in the direction of the…
A:
Q: 1 Newton of force is applied to a stone to move 100 cm. Calculate the work done.
A: Given, Force = 1 N Displacement = 100 cm = 1 m Work done = ?
Q: 50 W of power is required to to lift a barbell in 5 sec, How much work is done?
A: Power delivered on the system is equal to rate of work done on the system.
Q: A bowling ball has a mass of 10kg and is at a height of 5 meters What is its GPE and KE at the top
A:
Q: A spring has a spring constant of 66 N/m. If the spring is compressed 0 m, what is the applied…
A:
Q: A force of 40 N stretches a spring 150 cm. What is the spring constant?
A: The force applied to the spring stretches it by distance x than the amount of force is given by,…
Q: What is the work done on an object that moves from x = 1m to x - 2 m when a force, F = 300 N?
A: Given Force F=300N Displacement d=2-1=1m
Q: A washing machine has a power requirement of 2500 W. Every month the machine is used for 6.0 hours.…
A: power requirement of washing machine = 2500 Wtime = 6 hours cost of electricity = 13 cents/kWh
Q: A 14 kilogram boulder falls off a cliff and strikes the ground after falling 40 meters. How much…
A: Given data- Mass of boulder m=14 kg It strikes the ground after falling 40 meters so h=40 m
Q: A spring is 37 cm long. It is stretched by a force of 12 N until it is 51 cm long. How much energy…
A:
Q: A 2063 KG car accelerates from rest to a velocity of 25M/S in 13 seconds. The power of the engine…
A: Given:- The mass of the car is m = 2063 kg The car starts from rest and achieves a velocity of v =…
Q: needed to streto tural length of 30 low much work i.
A: The work-done to stretch the spring from 30 cm to 44 cm, and solve the spring coefficient (k) is…
Q: A personal watercraft and rider have a combined mass of 378 kg. What is their kinetic energy (in J)…
A: Given data, Total combined mass of watercraft and rider , m = 378 kg velocity of watercraft and…
Q: 1200 J of work was in lifting a box to a height of 3 m. What was mass of the box?
A:
Q: The applied 30 N force on a spring produces a deflection of 1.5 inches. What is the spring scale in…
A: Given: The force applied is 30 N. The deflection is 1.5 inches.
Q: A car exerts a force of 15,000 N while driving on a horizontal stretch of road. How much work is…
A: Given data: The force on car is F=15000 N. The distance traveled by car is d=120 m.
Q: A rock weighs 190lb and is lifted 1 ft by the lever. How much work is done? Answer in ft-lb The…
A: Weight of the rock is 190 lb The height to which it is lifted is 1ft The other end of lever pushed…
Q: How much work (in J) is done to accelerate a car which has a mass of 1200 kg from a speed of 13 m/s…
A:
Q: spring needs a force of 13 N to compress it 21 cm. How much work is requires to stretch the spring…
A:
Q: Romeo throws 5 gram pebbles at Juliet's window. The pebbles hit the window at 2.7 m/s. How fast (in…
A:
Q: A car goes down a frictionless 100 incline for 1 m. What is it’s final velocity?
A: Given Data : The distance travelled by car is given as s = 1m. The angle of inclination of the plane…
Q: A 2,263 kg car accelerates from rest to a velocity of 20 m/s in 13 seconds. The powwer of the engine…
A:
Q: What is the kinetic energy of a vehicle with a mass of 2300 kg moving at the rate of 10.0 ft'sec in…
A: The equation for the kinetic energy is given by K=12mv2 Here, m is the mass and v is the speed.
Q: A compact car can climb a hill in 13 s. The top of the hill is 38 m higher than the bottom, and the…
A: Given information: The mass of the car (m) = 1400 kg The height of the mountain (h) = 38 m The time…
Q: A boy uses a string to swing a 2 kg stone around his head. If the string is 1.5 m, and can bear a…
A: Given data: Mass of stone (m) = 2 kg Length of string (L) = 1.5 m Maximum tension (T) = 2224 N…
Q: You place a mug with a mass of 2.5 kg on a table that's 36 in. above the ground, what is the mug's…
A:
Q: A spring needs a force of 3 N to compress it 37 cm. How much work is required to stretch the spring…
A: force (F) = 3 N compression (d) = 37 cm = 0.37 m
Q: A ball has a kinetic energy of 106 J. If the ball is moving at a velocity of 3.21 m/s, what is the…
A: Given data: Kinetic energy (KE) = 106 J Velocity (v) = 3.21 m/s Required: The mass of the ball in…
Q: How much work is required to throw a ball with a mass of 0.44 Kg 23.4 m/s?
A: Here in this question we consider the ball initially is in rest. i.e. vi = 0 m/s.…
Q: A machine does 186 J of work in 20 is the power of the seconds.what machine ?
A: Introduction : In this question we are provided with value of work and time . with these data we…
Q: A force of 45.5 N is applied to a 14.3 kg object. The object moves 3.76 m in the opposite direction…
A: The formula for the work done by the applied force is:
Q: How much work is required to lift a 5.0-kg concrete block to a height of 3.4 m?
A: Work required to lift the concrete is given by, W=Fr........................(1) Where, W=work…
Q: 5 joules of work is needed to stretch a spring from its natural length of 30 cm to a length of 44…
A: Write the expression for the work-done to stretch the spring from 30 cm to 44 cm, and solve the…
Q: Power: A kilowatt-hour is equivalent to 1000 W. 3600 J 3,600, 000 j/ s . 3, 600, 000 J 3600 j/s
A: Answer:- 3,600,000 J A kilowatt- hour = 3,600,000 J Because 1kilowatt - hour = 1 kilowatt × 1…
Q: How much work is required to lift a 2.6-kg concrete block to a height of 1.3 m?
A: The work needed to lift the concrete block is
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