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A 2.00 cm high object is placed 3.0 cm in front of a concave mirror. If the image is 6.0 cm high and virtual, what is the focal length of the mirror?
_____ cm
A face appears in a convex mirror; face is 75% its normal size and appears to be 24cm behind the mirror. How far was the face standing from the mirror
Spring mounted bumpers ensure that the collision is essentially elastic. If the velocity of the truck is 17km/h (in the same direction as the car's initial velocity) after the collision, what is the initial speed of the car
How much work is done by the motor when the position of the arm is moved from x = 0.200 m to x = 0.750 m? If the work is done in 4.50 s, what is the power of the motor in W
A square panel with sides of length 8 inches is 1 inch thick and has a thermal conductivity of 0.53 W K?1 m?1. find the rate of heat transfer through the thickness of the panel
One end of an insulated metal rod is maintained at 100 and the other end is maintained at 0.00 by an ice-water mixture. Find the thermal conductivity of the metal
A 3.0 kg mass is supported by a steel wire of diameter 0.60 mm and length 1.4 m. How much will the wire stretch under this load
The astronaut throws a rock straight up with a velocity of + 16.9 m/s, What is the acceleration (magnitude and direction) due to gravity on this planet
What is the total charge of all the electrons in a 14 kg bar of zinc? (Zinc has 30 electrons per atom and an atomic mass of 65 u.)
A projectile is launched straight up at 59.5 m/s from a height of 76 m, at the edge of a sheer cliff. Find the maximum height of the projectile above the point of firing
A uniform 1.3-kg rod that is 0.76 m long is suspended at rest from the ceiling by two springs, one at each end of the rod. Find the angle that the rod makes with the horizontal
Would a plucked guitar sting vibrate for a longer time or a shorter time if the instrument had no sounding board? explain.
You fly from Boston's Logan Airport, at sea level, to Denver, at an altitude of 1.6 . Take your mass as 69 and the zero of potential energy at Boston. What is your gravitational potential energy in Denver
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