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An apple that weights 2.7 N falls vertically downward from rest for 1.4 s.
a) What is the change in the apple's momentum per second?
b) What is the total change in its momentum during the 1.4-second fall?
A car traveling at a constant speed of 27.0 m/s passes a trooper hidden behind a billboard. From the intersection of the two curves, read the time at which the trooper overtakes the car
How much heat in joules is needed to raise the temperature of 9.0 L of water from 0C to 94.0C? (Hint: Recall the original definition of the liter.)------J
You are the captain of spaceship A that leaves Earth at t=0traveling at 0.6c. find the relative speed of one spaceship as seen by the other
Water entering a house flows with a speed of 0.20 m/s through a pipe of 2.4 cm inside diameter. What is the speed of the water at a point where the pipe tapers to a diameter of4.5 mm
In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocityof +3.79 m/s, grabs him. The tackler holds onto the receiver, andthe two move off together with a velocity of +1.55 m/..
A pulse of light in air is incident on a medium with an indcident angle of 34 degrees. The velocity of light in the medium is 0.5 that of the speed of light. Find the refracted angle of the light in degrees.
A pair of flat mirrors meet to form a right angle. A beam of light is incident on one of them at a point 11.5 cm from their point of intersection, find what is the angle of incidence at the first mirror
an organ pipe open at both ends is vibrating with n 3 with a frequency of 769 hz. the length of the pipe is 0.5 m.
The Big Bang Theory suggests leftover background radiation. Find the wavelength of this radiation
a bat flying straight toward a wall at 11ms emits a pulse at 60khz. what is the frequency of the reflected ultrasonic
an electrically charged particle moves along a circle in a region of uniform magnetic field of magnitude B = 4.00mT. calculate the radius of the circle
Ship A is located 4.2 km north and 2.6 km east of ship B. Ship A has a velocity of 22 km/h toward the south and ship B has a velocity of 38 km/h in a direction 38° north of east. At what time (in h) is the separation between the ships least
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