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1. A car with tires pressurized to 240 kPa (35 lb=in2) leaves Phoenix with the tire temperature at 50-C. Estimate the tire pressure (in kPa and lb=in2) when the car arrives in Alaska with a tire temperature of 230-C.
2. Estimate the mass and weight of the air contained in a classroom where Thermodynamics is taught. Assume the dimensions to be 3.2 m · 8 m · 20 m.
A 0.8 kg object that stretches a spring 7.3 cm from its natural length when hanging at rest oscillates with an amplitude of 7.3 cm. Find the total energy of the system. The acceleration due to gravity is 9.81 m/s2. Find the gravitational potential en..
A roller-coaster car has a mass of 920 kilogram when fully loaded with passengers. Find the magnitude and direction of the force of track on the car at the top of the hill if the car's speed is 11 m/s
A rocket launched at 70 degrees to the horizontal has a constant net acceleration of 8 m/s^2 along this direction for 6.5 s and then is in free fall
An asteroid of mass 4.4 x 104 kilogram carrying a negative charge of 19.2 μC is 130 meter from a second asteroid of mass 6.8×104 kilogram carrying a negative charge of 25.0 μC. Find the net force the asteroids exert upon each other
A 53.5 kg pole vaulter running at 11.4 m/s vaults over the bar. Her speed when she is over the bar is 1.14 m/s. determine her altitude as she crosses the bar
a point mass rotates in a circle with l 1. calculate the magnitude of its angular momentum and the possible
mercury is poured into a tall glass. ethyl alcohol which does not mix with mercury is then poured on top of the mercury
The two wires shown in the figure below are separated by d = 12.4 cm and carry currents of I = 5.05 A in opposite directions. (a) Find the magnitude and direction of the net magnetic field at a point midway between the wires.
On the Moon's surface, lunar astronauts placed a corner reflector, off which a laser beam is periodically reflected, What is the difference in travel time for light that travels only through space to the moon and back and light that travels through ..
Let be a group and define a relation R on A as Implies .Prove that R is an equivalence relation.
A 78 g arrow is fired from a bowwhose string exerts an average force of 95 N on the arrow over adistance of 84 cm. What is the speed of the arrow as it leaves the bow
An airplane is to drop an abject to hit a target on the ground. How far in advance should the object be let go in order for it to reach the target
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