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Q. A plane flies from base camp to Lake A, 250 km away in the direction 36.9° south of east. After dropping off supplies it flies to Lake B, which is 200 km at 30.0° west of north from Lake A. Graphically determine the distance and direction from Lake B to the base camp.
Q. The rms speed of the molecules in 1.0 g of hydrogen gas is 1800 m/s.
A) what is the total translational kinetic energy of the gas molecules?
B) what is the thermal energy of the gas?
C) 500 J of work are done to compress the gas while, in the same process, 1200 J of heat energy are transferred from the gas to the environment. Afterward, what is the rms speed of the molecules?
A balloon rises at at constant velocity of 3m/s. A rock is released over the side. 4.5 seconds later this rock hits the ground. compute the height of the rock when it is halfway between the balloon and the ground. Assume Earth gravity (-9.81m/s), ..
The catapult of the aircraft carrier USS Abraham Lincoln accelerates an F/A-18 Hornet jet fighter from rest to a takeoff speed of 77.33 in a distance of 93.57 . suppose constant acceleration.
The sun falls on a concave mirror and forms an image 4.5 cm from the mirror. If an object 22 mm high is placed 12.7 cm from the mirror, where will its image be produced.
A loudspeaker of mass 25.0 is suspended the distance of = 2.40 below ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 2.50. What is the tension in each of cables.
A dentist uses a small mirror with a radius of 36 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 16 mm from the tooth, what is the magnification of an image.
A cue ball hits a stationary eight ball on a pool table. For which of the following systems is there a change in momentum during the collision? define why.
A 5.25 kg ball of clay is thrown downward from a height of 2.79m with a speed of 4.41 m/s onto a spring with k=1530 N/m. The clay compresses the spring a certain maximum amount before momentarily stopping.
If the initial temperature of the horseshoe is 450 °C, and the initial temperature of the water is 45° C, what is the equilibrium temperature of the system? Presume no heat is exchanged with the surroundings.
How many kilograms of water at 100.0 C could be converted to steam by the addition of 1.13 x 10^7 joules of thermal energy.
Find out the magnitude of the electric field at a point P on the y-axis 0.529 m from the origin. The value of the Coulomb constant is 8.99 × 109 N • m2/C2.
A 4.79 crate is suspended from the end of a short vertical rope of negligible mass. An upward force is applied to the end of rope, and the height of the crate above its initial position is given by + (0.61) what is the magnitude of the force when ..
What is the length of the greatest and thinnest string that can be located under a tension of 860 without breaking .
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