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A 0.20 kg stone attached to a 0.8 m long string is rotated in a horizontal plane. The string makes an angle of 24° with the horizontal. Determine the speed of the stone.
A mirror that is spherical has a focal length of -15 cm. what type of image would it be, What is the magnification going to be
A stable and highly soluble pollutant is dumped into a lake at the rate of 0.19 tonnes per day. The lake volume is 2E7 m3 and the average water flow-through rate is 8E4 m3 per day
A lens has diameter of 30 mm, What is the lens' theoretical resolution limit (in nm) when it is used in air with light of 550-nm wavelength
A person walks first at a constant speed of 4.80 m/s along a straight line from point a to point b, What is her average speed over the entire trip
A coil is connected in series with a 10.0k? resistor. A 50.0 V battery is applied across the two devices, How much energy is stored in the coil at the same moment
A small steel ball bearing with a mass of 11g is on a short compressed spring. When aimed vertically and suddenly released, spring sends the bearing to a height of 1.21 m. compute the horizontal distance the ball would travel if the same spring we..
A car starts from rest and accletation uniformly for 10s to a velocity of 8m/s. Find the value of accleration, retardation and total time taken
If the balloon is 24.9 cm in diameter when child loses it, what is its diameter at an altitude of 1510 m? Assume that the balloon is very flexible and so surface tension can be neglected.
A skateboarder shoots off a ramp with a velocity of 6.4 m/s, directed at an angle of 55° above horizontal.
A fireman, 25.6 m away from a burning building, directs a stream of water from a ground level fire hose at an angle of 39.5° above the horizontal
An automobile tire is inflated with air originally at 10.0°C and normal atmospheric pressure. What is the tire pressure
You want to examine the hairy details of your favorite pet caterpillar, using a lens of focal length 9.1 cm that you just happen to have around. what angular magnification do you achieve
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