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A projectile is fired at an upward angle of 45° from the top of a 312 m cliff with a speed of 220 m/s. What will be its speed when it strikes the ground below? (Use conservation of energy.)
Two point charges of -1microC and 2microC are separated by a distance of 0.30m. What is the electrostatic force on each particle
The nucleus of an atom consists of protons and neutrons (no electrons). A nucleus of a carbon-12 isotope contains six protons and six neutrons.
questiona violet and a red beam of light with wavelengths of 400nm and 700nm respectivelynbspat the same time strike an
A bullet is fired into a block of wood sitting on a block if ice. The bullet has an initail velocity of 500m/s and a mass of 0.005 kg. What is the magnitude of the impulse that acts on the block of wood
The water skier there has a mass of 66.0 kg. Find the magnitude of the net force acting on the skier when she is accelerated from rest to a speed of 14.0 m/s in 9.20 s
What force (magnitude) does the spring exert on the object while it is a distance 2.90×10-2 below equilibrium position, moving upward.
An 8.m, 220 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.75, and the ladder makes a 50° angle with the ground. How far up the ladder can an 770 N person climb before the la..
As a function of time, the velocity of the football can be written as . (If the acceleration of an object is constant, find the average acceleration vector of the football
What is the magnitude of the induced electric field 0.2070cm from the axis of the solenoid? Give your reply in Volts/meter in scientific notation to three significant digits.
If you weigh 670 on the earth, illustrate what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 19.0?
A jet aircraft with a mass of 4,575 kg has an engine that exerts a force (thrust) equal to 59,700 N. What is the jet's acceleration
The pilot of an airplane executes a loop-the-loop maneuver in a vertical circle. What is the pilot's apparent weight at the lowest point if his true weight is 160 lb
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