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Assume you are underwater, wearing Polaroid sunglasses. Looking upward toward the water surface, you view the setting sun by seeing light rays from the sun that strikes the water at an angle of incidence of 45 degree. The intensity of the incident sunlight is 200 W/m2. Determine the intensity of the light you see?
A 1.7 kg rolling hoop with a radius of 9 cm rolls without slipping. If the angular speed of the hoop is 2.46 rad/s , compute rotational kinetic energy of the rolling hoop
A man standing1.54m in front of a shaving mirror produces an inverted image20.0cm in front of it. How close to the mirror should he stand
An airline pilot pulls her 12.0 kg rollaboard suitecase alongthe groung with a force of 25.0 N for 10.0 m. The handle she pullsmakes an angle of 36.5 degrees with the horizontal. How much workdoes she do over the ten meter distance?
A subatomic particle called a muon has a mass 207 times that of an electron and a charge equal to an electron charge. how long will the muon survive before decaying
The sun is 30 degrees above the horizon. It makes a 48 meter long shadow of a tall tree. How high is the tree
A neodymium-glass laser emits short pulses of high-intensity electromagnetic waves. Find the average power of each pulse
Calculate the intensity distribution
A 20.0kg crate slides down a 29° incline at constant speed. What is the force of friction between the crate and incline
A wire is made of a material with a resistivity of 4.84004 × 10 ?8 ? · m. evaluate the resistance of the wire
A 500 kg cart is at the top of a steep track. It rolls from rest down a 7 meter hill. How much potential energy does it have at the top of the hill
An electric power station is producing 1.2e3 W of power that is to be sent to a small town located 12 km away. Find the power lost in heating the wires
A flask is filled with 1.51 L (L = liter) of a liquid at 96.8 °C. When the liquid is cooled to 17.5 °C, What is the coefficient of volume expansion of the liquid
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