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A person jumps from the roof of a house 2.8 m high. When he strikes the ground below, he bends his knees so that his torso decelerates over an approximate distance of 0.70 m. If the mass of his torso (excluding legs) is 42 kg, find
(a) his velocity just before his feet strike the ground, and
(b) the average force exerted on his torso by his legs during deceleration.
(A)What is the acceleration of gravity on the surface of the moon? (B) on the surface of Mars? The mass of Mars is 6.418 x10^23 kg and its radius is 3.38x10^6 m. Show work and formulas for credit
When light is incident from air perpendicular to the surface of a certain medium, Find the speed of light in the medium
the following takes place at a colony on the moon some time in the distant futurea 40 kg cannon is loaded with a 10 kg
A projectile launched vertically from the plane of the Moon rises to an altitude of 370 kilometer. Determine what was the projectile's initial speed
A horizontal block-spring system with the block on a frictionless surface has total mechanical energy E = 42.3 J and a maximum displacement from equilibrium of 0.259 m, Find the potential energy stored in the spring when x = 0.160 m
A closed loop of wire is given the shape of a circle with a radius of 0.483 m. find the magnitude of the average induced emf in the wire during this time
A thief was trying to pull a 20 kg coffer (a coffer is a box usually used to hold valuables) along an essentially frictionless horizontal surface. What was the work done on the coffer by the rope
a coil has an inductance of l=0.65mh and resistance of r=0.75 ohms . it is connected to the terminals of a battery with a emf of 1.5V, find the final steady-state or equilibrium current
explain why the ability to distinguish the two headlights of an oncoming car at a given distance is easier for the
In a physics lab, light with a wavelength of 570nmtravels in air from a laser to a photocell in a time of 17.0ns. What is the wavelength of the light in the glass
An object 2.00 cm high is placed 41.0 cm to the left of a converging lens with a focal length of 30.0 cm, Determine the magnification of the final image
One piece of 50 g ice at 0C is added to m grams of water at 25C. The system is insulated from outside and the exchange of heat is limited to ice and water only. find the total change in entropy
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