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You are standing 1.20 m from a 1,600-W heat lamp. Part 1:
(a) Assuming that the energy of the heat lamp is radiated uniformly in a hemispherical pattern, what is the intensity of light on your face? W/m2 Part 2:
(b) If you stand in front of the heat lamp for 2.00 minutes, how much energy is incident on your face? (Assume your face has a total area of 2.8 × 10-2 m2.) J Part 3 out of 3
(c) What are the rms electric and magnetic fields? Give answer with scientific notation.
An ambulance travels down a highway at a speed of 30 m/s. Itssiren emits sound at a frequency of 400 Hz, What is the frequency heard by a passenger in the car as thecar approaches the ambulance
A shell is fired at an angle of 30 to the horizontal with velocity of 196 m/s. Find the total time of flight, horintol range and maximum height attained
A 4.0 kilogram mass has a velocity of 4 m/s , east when it explodes into two 2 kilogram masses. Find the magnitude of the velocity of the other mass after the explosion
As a spaceship flies past with speed v, you observe that 1.0000s elapses on the ship's clock in the same time that 1.0000min elapses on Earth. How fast is the ship traveling, relative to the Earth
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. What is the mass of the wheel
To a person swimming 0.790m beneath the surface of the water in a swimming pool, what is the actual height of the diving board above the surface of the water
A cue ball, which has a mass of 0.17 kg, collides head-on with a stationary 8-ball, what was the velocity of the cue ball before and after collision
Suppose you're skiing up a 20m tall slope at the indicated angle of inclination. What minimum initial speed must you have at the bottom to just make it to the top
the magnitude of the charges is q 7.1 microc and the distance between them is d 4.9 mm.what is the algebraic
A concave mirror has a focal length of 13 cm. What is the magnification of an object placed 116 cm in front of this mirror?
A 7200 kg roller coaster train with a speed of 90.0 km/h brakes to a stop at the end of the ride. How many calories of heat are dissipated by the brakes as a result
Capacitor A and capacitor B both have the same voltage across their plates. However, the energy of capacitor A can melt m kilograms of ice at 0°C, What is the capacitance of capacitor B
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