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Q. You are driving home from school steadily at 80 for 140 . It then begins to rain and you slow to 50 . You arrive home after driving 3 hours and 20 minutes. How far is your hometown from school?Q. Two objects attract each other gravitationally with a force of 2.3×10-10 when they are 0.65 apart. Their total mass is 5.0 . Find their individual masses.
W hat is crates acceleration
A particle moving along the x axis in simple harmonic motion starts from its equilibrium position, the origin, at t = 0 and moves to the right. The amplitude of its motion is 1.70 cm and the frequency is 1.30 Hz.
Consider a too-small space station that consists of a 2.7m radius rotating sphere. A man standing inside is 1.9m tall and his feet are at 1g. What is the acceleration of his head.
Which of the planets fits the following description: "a solid, cool surface, with occasional dust clouds and a thin CO2 atmosphere".
Water runs out of the horizontal drainpipe at the rate of 120 liters per minute. It falls 3.20 m to the ground. Assume the water doesn't splash up, what average force does it exert on the ground? (1 liter = 1 kg.)
If you now place a pencil under the edge of the mirror nearer the wall, tilting it upward by 5.0, how much higher on the wall is the spot?
A 38.0 kg child swings in a swing supported by two chains, each 3.04m long. The tension in each chain at the lowest point is 429N. Find out the child's speeds at the lowest point.
What is magnitude of the speed of the boat relative to a stationary shore observer. A person stands at a point that is 4 m from one of the speakers and 4.4 m from the other. Does the person hear the tone? Explain.
An airplane flies 200 km due west from city A to city B and then 315 km in the direction of 33.0° north of west from city B to city C.
A car moving at 37 m/s approaches a stationary whistle that emits 270 Hz sound. The speed of sound is 347 m/s. What is the frequency of sound heard by the driver of the car.
A rope of negligible mass is wrapped around a 225 kg solid cylinder of radius 0.40 m. The cylinder is suspended some meters off the ground with its axis oriented horizontally, and turns on that axis without friction.
Tritium (3H) decays by negative beta decay with a half-life of 12.16 years. Use an atomic weight. What is the mass in g of 1 mCi of tritium? 3.026 For 3H.To what nucleus does 3H decay.
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