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A 82 kg diver steps off a 13 m tower and drops from rest straight down into the water. If he comes to rest 4.5 mbeneath the surface, determine the average resistance force exerted on him by the water.
Electrons are ejected with a maximum velocity of 5.1 x 105 m/s from a metal when illuminated by photons with a wavelength of 440 nm. calculate The energy of the incident photons
A spaceship is measured to be 120 m long while it is at rest with respect to an observer. If the spaceship now flies past the observer with a speed of .99c, what length would the observer measure of the spaceship.
One component of a metal sculpture consists of a solid cube with an edge of length 0.277 m. Find the cube's mass
A compact disk player has just been turned off. A disk decelerates uniformly from an initial angular velocity of 8.90 rev/s. The disk rotates through 4.50 revolutions before coming to rest. What is the tangential acceleration of a point on the disk 2..
A 4.22 box sits at rest at the bottom of a ramp that is 7.74 long and that is inclined at 40.0 above the horizontal. The coefficient of kinetic friction is 0.40, and the coefficient of static friction is 0.50.
An 8.56-kg block slides with an initial speed of 1.80 m/s down a ramp inclined at an angle of 27.4° with the horizontal. compute the distance the block slides before coming to rest
When an electron in a hydrogen atom falls from a higher energy state down to the ground state, What is the quantum number of the level from which the electron fell
An artillery shell is fired at an angle of 63.8 above the horizontal ground with an initial speed of 2000 m/s. Find the total time of flight of the shell
A jetliner is moving at a speed of 274 m/s. The vertical component of the plane's velocity is 54.0 m/s. Conclude the magnitude of the horizontal component of plane's velocity.
Two springs with spring constants k1 and k2are put together end-to-end. Let x1 be the amount by which the first spring is stretched relative to its equilibrium length, andsimilarly for x2. If the combined double spring is stretched by an amount b ..
In a certain organic molecule, the nuclei of two carbon atoms areseparated by a distance of 0.35 \rm nm. What is the magnitude of the electric force between them ?
Light from the sun arrives at the earth, an average of 1.50×1011 m away, at the rate of 1.40×103 W/m2, for an area perpendicular to the direction of the light. What is the power output of the sun
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