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A couple of astronauts agree to rendezvous in space after hours. Their plan is to let gravity bring them together. She has a mass of 60.0 kg and he a mass of 76.0 kg , and they start from rest 15.0 m apart. A) Find his initial acceleration. B) Find her initial acceleration. C) If the astronauts' acceleration remained constant, how many days would they have to wait before reaching each other? (Careful! They both have acceleration toward each other.)
The speed of an arrow fired from a compound bow is about 29 m/s. An archer sits astride his horse and launches an arrow into the air elevating the bow at an angle of 35 degrees above the horizontal, What is the arrow range
A converging lens has a focal length of 6.0 centimeter. Obtain the distance from the axis to the highest point of the arrow image
Two 1.0M-Hz radio antennas emitting in-phase are separated by 600m along a north-south line. A radio receiver placed 2.0 km east is equidistant from both the transmitting antennas and picks up a fairly strong signal. How far north should that rec..
After falling from rest from a height of 28 m, a 0.46 kg ball rebounds upward, reaching a height of 18 m. If the contact between ball and ground lasted 1.7 ms, illustrate what average force was exerted on the ball?
A contact lens is made of plastic with an index of refraction of 1.58. The lens has an outer radius of curvature of +1.99 cm, What is the focal length of the lens
A jet of water squirts out horizontally from a hole near the bottom of the tank, what is the height h of the water level in the tank
Ball of mass "m" hangs on a string of length L` straight down from a cart of mass M standing on horizontal rails. The cart can move along the rails without friction. While the cart is at rest, the ball is given a horizontal velocity v0, v0
Sally thinks she has an easy win and so, during the remaining portion of the race, deaccelerates at a constant rate of 0.40 m/s2 to the finish line. What constant acceleration does Mar now need during the remaining portion of the race, if she wish..
A neutron decays into a proton, an electron, and an anti-neutrino. Why can we state that the charge of the anti-neutrino must be zero?
44.3 kg of ice is melted into water then raised to a temperture of 354.8 K. How much energy is needed to complete this process
The current in a 100 watt lightbulb is 0.700A . The filament inside the bulb is 0.120mm in diameter. What is the electron current in the filament
A coin placed 11.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on the turntable until a rate of 36 rpm is reached and the coin slides off.
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