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A child's toy arrow has a suction cup on one end. When the arrow moving in positive x direction hits the wall, it sticks. The radius of the suction cup is 1.0 cm. Suppose that the mass of the arrow is about 10 g and it is concentrated in the suction cup. Assume that a vacuum exists between the suction cup and the wall. The atmospheric pressure is 1.0×105N/m2.
Determine the magnitude of the gravitational force exerted by Earth on the suction cup.
a planet has two small satellites in circular orbits around the planet. the first satellite has a period 12 hours and an orbital radius 6*10^7m. what is the orbital radius of the second satellite
In a wind tunnel the pressure on the top surface of a modelairplane wing is 8.6 x 104 N/m2 and thepressure on the bottom surface is 8.8 x 104N/m2. what is the total lift on the model airplane
A multicylinder gasoline engine in an airplane, operating at 2.35 103 rev/min, takes in energy 7.83 103 J and exhausts 4.57 103 J for each revolution of the crankshaft. What is the torque exerted by the crankshaft on the load?
A 5.0 kg sled initially at rest on a level snow-covered road, Find the kinetic energy of the sled after it had been pulled for a distance of 6.0 m
if the velocity of a 5.0 kg object tied to a string is constant at 30 ms when traveling in a vertical circle having a
Coherent light with wavelength 546 nm passes through two very narrow slits, and the interference pattern is observed on a screen the distance of 3.00 {rm m} from the slits. The first-order bright fringe is a distance of 4.86 {rm mm} from the center o..
suppose you are pulling a large block up an inclined plane. what factors determine how much force is necessary to pull
A diatomic gas does 390.3 Joule of work and also absorbs 2426 cal of heat. Estimate the change in internal energy of the gas
two sealed containers with volumes V1 and V2, respectively, contain dry air at pressures p1 and p2 and room temperature T. Find an expression for the new pressure
Compare the kinetic energy of car travelling. Compare the kinetic energy of an 900 kg car travelling at 30 m/s, and a 1,800 kg car at the same speed.
q1. a projectile is fired at an upward angle of 45 from the top of a 227 m cliff with the speed of 160 ms. what will be
The drawing shows two thermometers, A and B, whose temperatures are measured in °A and °B. The ice and boiling points of water are also indicated.
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