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The far point of a nearsighted person is 5.1 m from her eyes, and she wears contacts that enable her to see distant objects clearly. A tree is 15.9 m away and 1.8 m high.
(a) When she looks through the contacts at the tree, what is its image distance?
(b) How high is the image formed by the contacts?
The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration of -5.20 m/s2 for 4.05 s, making straight skid marks 61.0 m long, all the way to the tree. With what speed does the car then s..
A satellite with a mass of 250 kg moves in a circular orbit 7.00 multiply.gif 107 m above the Earth's surface. What is the gravitational force on the satellite
A nichrome toaster wire, initially at room temperature, carries 2.72A immediately after it's turned on. After the wire heats, the current drops to 2.44A
You throw a ball straight up in the air. The instant after leaving your hand, the balls speed is 30 meters per second. Ignoring the effects of air resistance, predict how fast the ball will be traveling 2 seconds later.
A swimming pool has dimensions 28m 11m and a flat bottom. The pool is filled to a depth of 2.30 m with fresh water.
A projectile of mass 350-g is accelerated from rest at 8.25 m/s2 for 3.5s. Calculate how fast the ball and embedded projectile are after the collision
A motorcycle and rider have a total mass of 252 kg the rider applies the brakes, What is the net force (in Newtons) on the motorcycle and rider combination
(a) Find the electric force on the proton. magnitude N direction (b) Find the acceleration of the proton. magnitude m/s2 direction (c) Find the distance it travels in 2.18 µs. i only need help with c please. I have rechecked my calculations and am..
Three carts of masses m1 = 4.50 kg, m2 = 12.00 kg, and m3 = 3.00 kg move on a frictionless, horizontal track with speeds of v1 = 4.50 m/s to the right, v2 = 3.00 m/s to the right, Find the final velocity of the train of three carts
Two small metallic spheres, each of mass m = 0.25 g, are suspended as pendulums by light strings from a common point, what is the magnitude of the charge on each sphere
A spring-mass system has a natural frequency given by w=sqrt(k/m) km, Determine natural frequency, w in units of rad/sec and Hz
A camel sets out to cross the desert, which is 45.2 km wide in the north-south direc- tion. Calculate the camel's eastward displacement while he crosses the desert
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