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Q: #1. Due to the conservation of angular momentum, moving mechanical parts in a spacecraft can affect ...

A: Dear student,                     According to the guidelines I am allowed to answer only one proble...

Q: EXAMPLE 1: HOT WATER START BY PUTTING A POT OF WATER ON THE STOVE. NEXT, TURN ON THE STOVE AND OBSER...

A: Example -1 Turning on the stove brings out the heat supply to water contained in the pot, then after...

Q: A child of mass m = 23 kg slides down a slide of height h = 2.7 m without friction. Let gravitationa...

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Q: A block of ice with mass 2.00 kgkg slides 0.935 mm down an inclined plane that slopes downward at an...

A: Given data: Mass of ice block is, m =2.00 kg . Sliding distance is, s =0.935 mm=0.935×10-3 m. Angle ...

Q: A diwali rocket, when ignited at the ground level, rises vertically upwards to the level of a window...

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Q: A student holds a spinning bicycle wheel while sitting motionless on a stool that is free to rotate ...

A: The given values are, ωw=16.1 rad/sIw=0.130 kg·m2Is=3.10 kg·m2

Q: A cylinder of certain mass is held in vertical position. If the height of the cylinder is 10 cm and ...

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Q: A tennis ball of mass 57.0 g is held just above a basketball of mass 617 g. With their centers verti...

A: Given:Mass of the tennis ball ,mm=57g    =57×10-3 kgMass of the basket ball ,MM=617g    =617×10-3 kg...

Q: A steel wire is 2.70 mm long and is stretched with a tension of 1200 N . The speed of propagation of...

A: ...

Q: A 1000 kg car moves with a speed of 50 m/s on a circular track of radius 100 m. What is the magnitud...

A: The mass of a car is, m=1000 kg The tangential velocity of a car on the circular path is, v=50 m/s T...

Q: Please help

A: Calculate the friction force acts on the block. f = 0.2*N   = 0.2*40   = 8 N

Q: A force of 30.0 N is applied in the positive x - direction to a block of mass 8.00 kg, at rest on a ...

A: Given:mass of block  m= 8.0 kg force on block  F= 30N initial velocity u= 0 m/s  

Q: A motor car running at the rate of 7 m s-' can be stopped by the brakes in 10 m. Prove that the tota...

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Q: If I shoot a rubber bullet horizontally at a stationary toy car from behind and the bullet sticks to...

A: Based on law of conservation of momentum

Q: The tires on a new compact car have a diameter of 2.0 ft and are warranted for 59,000 miles. (a) De...

A: Given diameter of tire in the above problem is  d=2.0 ft=0.3048×2=0.6096 m as 1ft = 0.3048 m so the ...

Q: The period of oscillation of a pendulum is T. How does the period of oscillation change if the pendu...

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Q: Stars originate as large bodies of slowly rotating gas. Because of gravity, these clumps of gas slow...

A: As the stars shrink , their moment of inertia decreases as compared to their original value. Now sin...

Q: Need help on this question. The anwser should be 2.07

A: Given: Mass of the rod = M Length of rod l = 1.6 m.

Q: A 1.50 ✕ 103-kg car starts from rest and accelerates uniformly to 16.2 m/s in 11.1 s. Assume that ai...

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Q: A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a fri...

A: (a) Apply Newton's second law, Net torque = Moment of Inertia x angular acceleration T = Iα 260*0.33...

Q: An object of mass 9 kg is moving at a speed of 6 m/s collides with a ball of mass 5 kg at rest. If 9...

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Q: A man weighing 50 kg supports a man of 20 kg on his hand. What is the work done by him when (a) he i...

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for yo...

Q: Gas is contained in a 9.00-L vessel at a temperature of 21.0°C and a pressure of 7.00 atm. (a) Deter...

A:  Volume of the gas (V)=9 L Temperature of the gas (T)=21 oC=294 K Pressure of the gas (P)=7 atm Univ...

Q: A 200g mass of aluminum at 80°C is dropped into 600g of water at 15°C. What is the final temperature...

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Q: 14. A heavy object is thrown vertically down from the top of a 1.3 x 10 m building at a speed of 11....

A: H = 130 m initial speed = 11 m/sUsing conservation of energy Initial kinetic energy + initial potent...

Q: Dogs keep themselves cool by panting, which results in evaporation from moist tissues of the airway ...

A: Temperature ( T ) = 95° F Converting it to Celsius temperature : T = 35° C Mass ( M ) = 25 lb Conver...

Q: A 30 kg child climbs 15 meters up a tree. When he stops to have a look. around, what is the child's ...

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Q: A 20.0-g bullet moving at 1 000 m/s is fired through a one-kg block of wood emerging at a speed of 1...

A: The mass of a bullet is, m1=20 g=0.02 kg The mass of a wooden block is, m2=1 kg The initial speed of...

Q: Methane, CH4, is the simplest hydrocarbon molecule and in its natural state is a gaseous substance. ...

A: Mass of methane = 64 g  Molecular mass of methane = (12 +4) = 16 g  Number of moles of methane = giv...

Q: Only part D, thank you!

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Q: A hollow sphere with a radius R and a mass M (note that I = (2/3)MR^2 for a hollow sphere) rolls dow...

A: Answer: Option C Explanation: From figure,  Taking the inclined plane as x and y axis and applying ...

Q: A solid disk (moment of inertia = 20 [kg⋅m2][kg⋅m2]) rotates around an axle (with friction) connecte...

A: Moment of inertia of the solid disk (I)=20 kg m2 Energy at point 1 (E1)=250 J Energy at point 2 (E2)...

Q: Hello, I know the answer is 2d but I want to know how to get to that answer. Please help.

A: The initial horizontal velocity of the diver uh=v The horizontal displacement x=d The horizontal acc...

Q: Fleas are agile, wingless insects that feed on the blood of their hosts. Although they are typically...

A: The spring potential is converted as the kinetic energy of the Flea when it jumps.  Uspring=KE=12mv2...

Q: A weather emergency siren is mounted on a tower, 189 m above the ground. On one hand, it would be a ...

A: Height of siren above ground (h)=189 m Intensity level of sound from the siren in dB (dB)=106 dB Ref...

Q: A copper telephone wire has essentially no sag between poles 36.0 m apart on a winter day when the t...

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Q: Near the end of a marathon race, the first two runners are separated by a distance of 45.0 m. The fr...

A: Given: The first two runners are separated by a distance of d=45 m, The front runner has a velocity...

Q: A solid sphere of uniform density has a mass of 2.42 kg and a radius of 0.432 meters. A force of 13....

A: Given Data: The mass of a solid sphere is, M=2.42 kg The radius of a solid sphere is, R=0.432 m The ...

Q: (a) A spaceship is projected vertically upward from the Earth's surface with an initial speed of 6.9...

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Q: In the following figure, the current of the circuit in the 8 ohm resistor is 0.5A. What is the curre...

A: Voltage across parallel resistors are same. Hence, Voltage across 8 ohm resistor is as follow; V8=I8...

Q: An iron wire has a resistance of 78.7. m ohm at 20 degrees Celsius. When the wire carries a current,...

A: The temperature coefficient of resistance for iron is 0.0057 C-1 ...

Q: A car’s tachometer records the rotational frequency of the crankshaft. A car engine is idling at 500...

A: Initial angular velocity of the engine  ωi=500 rpm=2π50060rad/s=52.3 rad/s The final angular velocit...

Q: A capacitor is connected to an AC source. If the maximum current in the circuit is 0.400 A and the v...

A: Given data : Maximum current is, Im=0.400 A. Voltage from AC source is, ∆V=(91.0 V)sin[(76π)s-1t].  ...

Q: If a ball is released to fall down from the top of a building 30meters high, how many seconds will i...

A: Given: Height of building, h=30 m To determine: The time taken by the ball to reach the ground.  

Q: Which of the following is not a property of a proper simple harmonic oscillator? Select one: All ...

A: All these are the properties of simple harmonic oscillator  It is so because the amplitude of oscill...

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.