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Identify the action-reaction pairs of forces for the following situations.
a) You step off a curb.
b) You pat your tutor on the back.
c) A wave hits a rocky shore.
A boy of mass 35 kg and a girl of mass 40 kg are skating towards each other with speeds of 2.5 m/s, and 2.0 m/s respectively. Assume that there is no friction, and find their combined velocity after they meet
Consider two forces exerted on a 65kg object: one 200. N acting at 25 degrees and another of 100. N acting at 45 degrees. find the net force acting on the object
Three resistors are connected in series across a battery, What is the greatest voltage that the battery can have without one of the resistors burning up, How much power does the battery deliver to the circuit
A bullet of mass m = 28 g is fired into a wooden block of mass M = 4.1 kg as shown in the figure below. The block is attached to a string of length 1.5 m. what was the initial speed of the bullet
A rectangular block of wood, 10 cm*15 cm*40 cm, has a specific gravity of 0.6. What fraction of the block is submerged
compute the magnetic flux through a rectangular coil of dimensions 6cmx8cm along the x-z plane if the magnetic filed of
A stone is thrown horizontally with an initial speed of 10 m/s from the edge of a cliff. What is the height of the cliff
A 5-kg fish swimming 1 m/s swallows an absent-minded 1-kg fish swimming toward it at a velocity that brings both fish to a halt immediately after lunch
An individual white LED (light-emitting diode) has an efficiency of 20% and uses 1.0 W of electric power. How many LEDs should be combined into one light source to give a total of 1.6 W of visible-light output (comparable to the light output of a 40 ..
An ice cube is placed in a microwave oven. Suppose the ovendelivers 97 W of power to the ice cubeand that it takes 32170 J to melt it. How long does it take for the ice cube to melt
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (?196°C), What value of absolute zero does the calibration yield
Light with a frequency of 2.95 x 1015 Hz ejects electrons from the surface of calcium, which has a work function of 2.87 eV. What is the minimum de Broglie wavelength of the ejected electrons?
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