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A car of mass 3 x 10^3 kg moving with a velocity of 20 m.s-1 is passing a truck of mass 7.5 x 10^3 traveling at a speed of 16 m.s-1. what is the velocity of the center of mass of the system?
There is a moon orbiting an Earth-like planet. The mass of the moon is 4.74 × 1022 kg, the center-to-center separation of the planet, What is the angular momentum of the moon
If a student with relaxed "normal" eye finds a magnifying glass with a focal length of 78 mm, What is the magnification of this magnifying glass
A 66 {rm kg} skier speeds down a trail, as shown in the figure . The surface is smooth and inclined at the angle of 22 ^circ with the horizontal. Find the magnitude of the net force acting on the skier.
A heat pump uses an ideal Carnot cycle to heat a house. The outside air has a temperature of 292 K, What is the coefficient of performance of this heat pump
A string 1.3 m long with a mass of 3.9 g is stretched between two fixed points with a tension of 93 N. Find the frequency of the fundamental on this string
An object's moment of inertia is 2.00kgm2 . Its angular velocity is increasing at the rate of 3.80, What is the total torque on the object
A cubical box 20cm on a side is constructed from 1.5cm -thick concrete panels. What is the air temperature inside the box when the light is on if the surrounding air temperature is 20 ?C
A small circular loop of wire of radius 5.0 cm and resistance R = 1.7 10-3 Ω is centered inside a large circular loop of wire of radius 50 cm, Find the average current in the smaller loop during this time interval
An apple is placed 13.6 cm in front of a diverging lens with a focal length of magnitude 22.4 cm. What is the magnification of the image of the apple
Liquid water at 25C and 1 bar fills a rigid vessel If heat is added to the water until it's temperature reaches 50C, what pressure is developed? The average value of B between 25 and 50C is 36.2x10^-5/K. The value of K at 1 bar and 50C is 4.42x10^-5/..
A hypodermic syringe is attached to a needle that has an internal radius of 0.303 mm and a length of 3.02 cm. What must the pressure of the fluid in the syringe be in order to inject the solution at a rate of 0.253 mL/s
It position is xo>0 and i give it a kick so that it moves back towards the origin and executed simple harmonic motion with amplitude 2xo. Find out its position as a fuction of time in the forum of x(t)=acos(wt-&)
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