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In a baseball game, the catcher stops a 35 m/s pitch. How much net work is done on the baseball as it is caught? During the catch, the catcher's mitt moves back 5.0 cm and gravity does negligible work. Noting that the mass of a baseball is 145g, what average force did the mitt exert on the ball?
We know that the acceleration due to gravity at the surface of the Earth is 9.8m/s2, There's one other domain, what's the value of gravity below the surface of the Earth
What is the charge on A so that the force on B is zero.
But rather caused by a star collapsing upon itself causing not a huge bang as once thought, other than rather a wimper, later emitting Hawking Radiation.
A 4.47 m long pole stands vertically in a lake having a depth of 2.22 m. while the sun is 62.6 degrees above the horizon, find the length of the pole's shadow on the bottom of the lake.
A simple circuit is set up that only consists of a 12 V battery connected to a light bulb with a resistance of 9 Ohms. What current flows through the light bulb
A ladder of length L = 2.5 m and mass m = 15 kg rests on a floor with coefficient of static friction ?s = 0.57. Assume the wall is frictionless. What is the normal force the floor exerts on the ladder
A shoe store uses small floor-level mirrors to let customers view prospective purchases. At what angle from vertical must such a mirror be inclined so that a person standing 59 from the mirror with eyes 142 off the floor can see her feet.
Typical field strengths are a few femoteslas (1fT=10^-15T). An adult brain is about 140mm wide, A reasonable magnetic field is 4.35fT at the sensor. According to this model, what is the current in the brain?
A cylinder of gas at room temperature (20°C) has a pressure p1. To what temperature in degrees Celsius would the temperature have to be increased for pressure to be 2.7p1.
A man standing on the ground throws a pebble with an initial veloctiy of 14m/s at an angle of 70 degrees above the horizontal, How high above the ground is the window
As the swimmer approached the Ontario shore, she encountered a cross current of 2 m/s [E 25 S]. Compute her velocity with respect to the crowd observing from the beach (with respect to the ground)
A 1100 car traveling at a speed of 40 skids to a halt on wet concrete where = 0.50. How long are the skid marks.
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