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What is the size of net force on an object that has 6N offorce pulling upward and 12N pulling down?
A laser with wavelength 650 nm is incident on a single slit with width 10 mm. A screen is placed 1 m beyond the slit. How far apart will the first dark bands on either side of the central maximum be?
The pilot of an aircraft wishes to fly due west in a 48.6km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 174 km/h. How many degrees from west should the aircraft head? Let clockwise be positive. Answer in d..
A tow truck pulls a car 5.2 km along a horizontal roadway using a cable having a tension of 790.
In what order are the Bayer letters assigned to stars? Is delta-Capricorni brighter than alpha-Capricorni? How do you know? In what order are Flamsteed numbers assigned to stars?
What is the minimum thickness of an oil-slick coating of index of refraction 1.3 on water of index 1.5 which would reflect no red light of wavelength 650 nm? (b) What would be the colour of the light that is reflected off the oil?
A cell phone 6.7 cm tall is 43 cm in front of your eye (diameter 2.5 cm). Find the size of the image of the cell phone on your retina
A projectile is launched from a 300 m high cliff at an angle of 30 degree with an initial velocity of 150 m/s. (g=9.8m/s^2). Begin by drawing a diagram and determine: a) The total time of the flight b) The horizontal velocity of the rocket on impa..
What should be coefficient of static friction
What is the pressure change in water going from a 3.0- cm-diameter pipe to a 2.1- cm-diameter pipe if the velocity in the smaller pipe is 5.0 m/s
question1what pairs of forces act in the following situations?a. a pitcher throws a baseball.b. a batter hits a
Two equal forces act on the two different objects, one of which has a mass ten times as large as the other. Will the more massive object have the larger acceleration, an equal accelearation, or a smaller acceleration.
An object weighing 32 lb is released from rest 50 ft above the surface of a calm lake. Before the object reaches the surface of the lake, the air resistance (in lbs) is given by 2v, where v is the velocity (in feet per second).
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