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A 3.0-cm-tall object is 24 cm in front of a diverging lens that has a -30 cm focal length.
1. Calculate the image position.
2. Calculate the image height. Type a positive value if the image is upright and a negative value if it is inverted.
An 1800-W heater carries a current of 9 A. How much does it cost to operate the heater for 100 min if electrical energy costs 11 cents per kWh
The windpipe of a typical whooping crane is about 4.4 feet long. Calculate the lowest resonant frequency of this pipe
a basketball is thrown horizontally with an initial speed of 4.50 ms. a straight line drawn from the release point to
A 65 kg hiker has fallen down a hole. One rescuer attaches a rope to the injured hiker and then a second rescuer pulls the injured hiker straight up out of the hole at a steady rate. How much force would the second rescuer need to exert on the rope t..
A gasoline engine in a large car takes in 10,500J of heat and delivers 2450J of mechanical work per heat cycle. How much gasoline is burned during each cycle
Bullets can’t penetrate Superman’s chest. Assume that Superman, with mass 104 kg, while not moving, is struck by a 4.20-g bullet moving with a speed of 835 m/s. The bullet drops straight down with no horizontal velocity.
A projectile fired from a gun has initial horizontal and vertical components of velocity equal to 30 m/s and 40 m/s, respectively. Determine the Range of the projectile
A skiy diver, with parachute unopened, falls 625 m in 15.0s. What is her average velocity (both magnitude anddirection) for the entire fall
A capacitor with a capacitance of C is charged with charge of magnitude Q on each plate. Find what is the time constant of this RC circuit
A car of mass m = 1190 kg is traveling down a ? = 14 degree incline. When the car's speed is v0 = 18 m/s, Calculate the distance the car travels down the hill L in meters until it comes to a stop at the end
What is the minimum time necessary for crossing.
Atmospheric pressure is half its sea-level value at analtitude of. Weather phenomena such as clouds and storms are found in the, Average atmospheric pressure does not correspond to,
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