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Consider an equilibrium situation in which three forces act on an object but the total force is zero. What can be said about these forces? Pick all that apply. 1. All forces must have the same magnitude. 2. All forces must have different magnitude. 3. The sum of the magnitudes of any two forces must be greater than the magnitude of the third force. 4. The magnitude of any force must be greater than the difference of magnitudes of the other two forces. 5. The graphical vector sum resembles a triangle. 6. All forces must lie in the same plane.
an object of height 2.00cm from a concave spherical mirror have a focal length of magnification 10.0 cm. a use graph
A golf ball of mass 0.050 kg is at rest on the tee and has a velocity of 102 m/s immediately after being struck. what was the club velocity before the collision
Suppose the skin temperature of a naked person is 34.3 °C when the person is standing inside a room whose temperature is 21.3 °C. Assuming the emissivity is 0.673, find the net loss of radiant power from the body
A gymnast with mass m1 = 42 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 106 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of..
A helicopter flies over the aortic ice pack at a constant altitude, towing an airborne 119 kilogram laser sensor that measures the thickness of the ice. estimate the tension in the cable towing the sensor
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.2×106 , What is the total work they do on the supertanker
A 5 kilograms object is supported by aluminum wire of length 2.6 meter and diameter 2.2 millimeter. Determine how much will the wire stretch
Suppose a gas-filled incandescent light bulb is manufactured to have atmospheric pressure in it at 20.0°C. Find the gauge pressure inside such a bulb when it is hot
A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 41 at 20°C. what is the temperature coefficient of resistivity
An initially stationary box of sand is to be pulled across a floor by means of a cable in which the tension should not exceed 949 N. The coefficient of static friction between the box and the floor is 0.34.
Illustrate what are the velocities of the two people after the snowball is exchanged? Disregard the friction between the skates and the ice.
An object is placed 12 cm from a concave mirror produces a real image 6.0 cm from the mirror. Where is the new image located as measured from the mirror
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