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An electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive plate (see the drawing). The plates are separated by a distance of 1.3 cm, and the electric field within the capacitor has a magnitude of 2.4 x 106 V/m. What is the kinetic energy of the electron just as it reaches the positive plate?
A runner runs 3.0 km, in a straight line, in 9.0 min and then takes 25 min to walk back to the starting point. What is the average speed for the whole trip
A 16 g bullet strikes and becomes embedded in a 1.10 kg block of wood placed on a horizontal surface just in front of the gun. what was the muzzle speed of the bullet
a car with a speed of 40 kmh approaches the bottom of an icy hill. the hill has an angle of inclination of 10.5
A long solid cylindrical wire of radius 0.01 meters carries a current whose density (current per unit area) is given by J=0.02r^2.
A Baseball player rounds third base and is heading for home when he is signalled by the base coach to slide. find the coefficient of kinetic friction between him and the ground
how fast is the mass moving when leaves the spring. What is her velocity relative to the ice surface.
The lens has a refractive index of 1.30. Find out the difference Δx in the positions where each crosses the principal axis.
A light ray enters a glass slab at point A at an angle of 58.6° with respect to the surface normal, What minimum value for the index of refraction of the glass can be inferred from this
Two particles are moving along the x axis. Particle 1 has a mass m1 and a velocity v1 = +3.7 m/s. Find the ratio m1/m2 of the masses of the particles
(a) How much does a 70.0 kg person weigh on the Earth? (b) How much would she weigh on the Moon (gmoon = 0.166g)? (c) How much would she weigh on a neutron star where gstar = 1.43×1011g?
A 370 kg rocket sled can be accelerated at a constant rate from rest to 1200 km/h in 2.0 s. What is the magnitude of the required net force
A 36 g ball is shot from a spring gun whose spring has a force constant of 529 N/m. The spring can be compressed 4 cm. How high will the ball go if the gun is aimed vertically
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