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A 0.50-kg block attached to an ideal spring with a spring constant of 80 N/m oscillates on ahorizontal frictionless surface. When the spring is 4.0 cm longer than its equilibrium length, thespeed of the block is 0.50 m/s. The maximal extension of the spring from its equilibrium lengthduring the oscillation is:(a) 4.0 cm (b) 2.0 cm (c) 2.8 cm (d) 5.6 cm (e) 11.2 cm
When placed 1.2 m apart, the force each exerts on the other is 12 N and is repulsive. What is the charge on each? What if the force were attractive.
Two point charges Q1 = +4.30 nC and Q2 = -3.40 nC are separated by 45.0 cm. What is the potential energy of the pair of charges
A certain heat engine does 8.5 kJ of work and dissipates 8.50 kJ of waste heat in a cyclical process. What was the heat input to this engine
a charge is spread uniformly along the y-axis from y 0 to y 1. the charge density on the y-axis is . find the
A 70.0 kg circus performer slides 4.90m down a pole to the circus floor, starting from rest. What is the kinetic energy of the performer as she reaches the floor if the frictional force on her from the pole (a) is negligible (she will be hurt) and (b..
When a 5.5 cm long pencil is arranged perpendicular to a convex mirror's optical axis at a distance of 29 cm from the mirror, its image is 2.8 cm tall. (a) What is the mirror's focal length? (b) How tall is the pencil's image if the pencil is move..
Suppose you have the following intermediate (i.e., important figures may be incorrectly stated) experimental results: L = 0.739 ± 0.026 m , f1 = 36.48 ± 1.82 Hz , T = 5.28 N (exact) . What is the linear mass density of the string (without uncertainty..
Bohr Model An electron is in the n=5 state of hydrogen to what states can the electron make transitions, what are the energies of the emitted radiations
A 10 g object moving to the right at 20 cm/s makes an elastic head-on collision with a 15 g object moving in the opposite direction at 30 cm/s. Evaluate what the velocity of each object after collision
Determine the same situation, but now let the initial speed v0 of the first ball be given and treat the height h of the building as an unknown. What should the height of the building be for both balls to reach the ground at the same time for v0= 8..
A 3.3kg block sits on a table. A 3.0kg bullet is fired horzontally at a speed of 520 m/s, find the speed of the block immediatley after the bullet exits
A typical AAA battery has stored energy of about 3400 J. (Battery capacity is typically listed as 625 mA h, meaning that much charge can be delivered at approximately 1.5 V.) what must the area of each plate be
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