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The Earth’s electric field creates a potential that increases 100 V for every meter of altitude. If an object of charge +4.5 mC and mass 68 g falls a distance of 1.0 m from rest under the influence of the Earth’s electric and gravitational fields, what is its final kinetic energy?
A cannonball launched with an initial velocity of 131 m/s at an angle of 40° follows a parabolic path and hits a balloon at the top of its trajectory.
What is the minimum diameter mirror on a telescope that would allow you to see details as small as 4.85 km on the moon some 384000 km away
A skateboarder shoots off a ramp by a velocity of 6.5 m/s, directed at an angle of 54° above the horizontal. The end of the ramp is 1.1 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as t..
To avoid a rear-end collision with a slow moving vehicle ahead, you step on the accelerator and increase your angular speed to 13.4 x 10-2 rads/s in a time of 8 s. What is the tangential acceleration of the car
A spaceship of proper length 306 m takes 0.75 µs to pass an Earth observer. Determine the speed of this spaceship as measured by the Earth observer.
when one gallon of gasoline is burned in a car engine 1.22 x 108 j of internal energy is released. suppose that 1.05 x
A charge of 4.55 mC is placed at each corner of a square 0.100 m on a side. Determine the direction of the force on each charge
A 23.5 kg gold bar at25.5°C is placed in a large,insulated 0.800 kg glass container at 15.0°C with 2.00 kg ofwater at 25.0°C. Calculate the final equilibrium temperature
GPS satellites orbit the Earth at an altitude of 12,500 miles. How long does it take these satellites to make a complete orbit of the Earth?
a rigid container holds 0.20 of hydrogen gas. how much heat is needed to change the temperature of the gas from 50 k to
A child leaves her book bag on a slide. The bag, which is at the top of the slide, starts from rest and reaches the bottom in 1.40 s. What is the friction force acting on the bag
A wheel is spinning at 46 rad/s when an acceleration of 0.75 rad/s2 is applied. If the acceleration lasts for 140 revolutions, what is the final angular speed
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