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If an object is moving with constant momentum ‹ 12, ?16, ?7 › kg · m/s, what is the rate of change of momentum (dP/dt)
dp/dt= _______? (kg.m/s)/s
What is the net force acting on the object?
Fnet= _____?N
a 245 kg person lays on board that is supported only on the ends and that has a mass of 12.0 kg. if the person and the
Three 17--long rods form an equilateral triangle. Two of the rods are charged to + 16 , the third to - 16 . What is the electric field strength in the middle of the triangle
A grating has exactly 8000 lines uniformly spaced over 2.58 cm, What is the expected angle for the third-order maximum of the green line
what the torque increase or decrease as the angle increase. Calculate the magnitude of the torque.
A loudspeaker of mass 23m is suspended a distance of h = 1.20 m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 2.9m.
A helicopter is ascending vertically with a speed of 4.50 m/s. At a height of 195 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground.
On your wedding day your lover gives you a gold ring of mass 3.98 g. 59 years later its mass is 3.73 g. On the average how many atoms were abrated from the ring during each second of your marriage? The atomic mass of gold is 177 u.
Two motorcycles are traveling due east with different velocities. However, four seconds later, they have the same velocity. During this four-second interval, Which motorcycle was moving faster
A 10-g bullet is fired horizontally into a 300-g wooden block initially at rest on a horizontal service and becomes embedded in it. The coefficient of friction between block and surface is 0.50. The combined system slides 4.0-m before stopping. Wi..
A certain kind of glass has nblue = 1.560 for blue light and nred = 1.510 for red light. what is the angle between the red and blue light inside the glass
A rubber ball is dropped from rest 3.3m onto level ground. Bouncing back the ball loses 25% of its mechanical energy. To what height does it rebound
A landing craft approaches the surface of Penitgy, a planet in a far-away galaxy. The landing craft has two engines attached to the bottom, what is the mass of the landing craft
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