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A particle is moving with a constant acceleration of 4.0 m/s2. Its speed at t = 1.0 s is 4.0 m/s and at t = 3.0 s it is 12.0 m/s. What is the area under the position-time graph for the interval from t = 1.0 s to t=3.0 s?
A light wave in air is incident on a water surface, (a) At what angle of incidence are the reflected and refracted waves at right angles to each other? What is the reflectivlty of the water for normal incidence? (c) At what angle of incidence is this..
A 1 000-V battery, a 3 000-W resistor, and a 0.50-µ Fcapacitor are connected in series with a switch. The capacitor isinitially uncharged. What is the value of the current the moment after the switch is closed?
Four railroad cars, each of mass3.00 x 104 kg, are coupled together and coastingalong horizontal tracks at speed vi toward the south. Find the initial speed of the cars
A nearsighted patient's far point is 0.723 m from her eyes. What is the distance between her eyes and the glasses
You have 31m of wire, which you want to use to construct a 45cm diameter coil whose magnetic field at its center will exactly cancel the earth's field of 0.55 gauss. What current will your coil require
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground by an initial speed of 21 m/s at an angle 58 degrees; with respect to the horizontal. Sarah catches the ball 1.5 meters above the ground. Wh..
The yellow light from a helium discharge tube has a wavelength of 587.5 nm. calculate the number of lines per centimeter on the grating
A disk rotates with constant angular acceleration. The initial angular speed of the disk is 2 rad/s. After the disk rotates through 1 Radians, the angular speed is 17rad/s. What is the magnitude of the angular acceleration?
A diverging/negative lens has a focal length of -12 cm. A 6.0 cm object is placed at several locations relative to the lens. The locations are (a) 55 cm, (b) 12 cm, and (c) 8 cm from the lens. Use the thin lens equation to calculate the image distanc..
If an ocean wave strikes the land every 12 seconds and the horizontal distance between adjacent crests and troughs is 4 m, what is the average speed of the wave
A 55.1 kg ice skater is moving at4.10 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She thenmoves in a circle of radius 0.800 maround the pole.
A defiblirator is used during a heart attact to restore theheart to its normal beating ppattern. How much charge moves during this time
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