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An object is located 13.5 cm in front of a convex mirror, the imagebeing 7.45 cm behind the mirror. A second object, twice as tall asthe first one, is placed in front of the mirror, but at a differentlocation. The image of this second object has the same height as the other image. How far in front of the mirror is the second object located?
You need a transformer that will draw 16 W of power from a 220 V (rms) power line, stepping the voltage down to 12 V (rms) What will be the current in the secondary coil? Express your answer to two significant figures and include the appropriate un..
The tires of a car make 86 revolutions as the car reduces its speed uniformly from 88.0 km/h to 60.0 km/h. What is the angular acceleration of the tires in rad/s^2
A 0.300-kg mass, attached to the end of a 0.750-m string, is whirled around in a smooth level table. If the highest tension that the string can withstand is 250 N, after that what highest linear speed can the mass have if the string is not to brea..
A lottery machine uses blowing air to keep 2000 Ping-Pong balls bouncing around inside a 1.0m X 1.0m X1.0m box. What is the mean free path between collisions
Two negative and two positive point charges (magnitude = 3.64mC) are positioned on opposite corners of a square (each side = 0.155 m).Determine the magnitude of the force on each charge.
A 1400kg sedan goes through a wide intersection traveling from north to south when it is hit by a 2400kg SUV traveling from east to west. How fast was sedan traveling just before the collision
Air passes through a large-diameter glass tube, then through a small-diameter tube, and finally through a large-diameter tube again, Find the velocity of the air in the small-diameter tube
An alpha particle (doubly ionized He atom ) is created in a vacuum in the center between our pair of Helmholtz coils horizontal (in the xy plane), how fast would the particle be traveling
You then kick the ball with the same initial velocity and at the same angle to the horizontal. This time, however, you kick it up a 15 degree slope. What is the horizontal range of the ball's travel
A dragster starts from rest and accelerates down a track. Each tire has a radius of 0.320 m and rolls without slipping. At a distance of 389 m, calculate the linear speed of the dragster
A squirrel has x- and y-coordinates ( 1.4m , 3.3m ) at time t1=0 and coordinates ( 4.8m , -0.40m ) at time t2 = 2.7s, Find the magnitude of the average velocity
The hail comes straight down at a mass rate of m/?t=0.069 kg/s and an initial velocity of v0= -15 m/s. calculate the magnitude of the force exerted by the hail on the roof
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