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In each of the diagrams below, one or more external forces act on the indicated system. Which of the forces listed below are the reaction to the external force mentioned? (Select all that apply.)
(a) the mower exerts a force
upward on the Earth due to gravitational attraction
downward on the ground due to contact
downward on the Earth due to gravitational attraction
upward and to the left on the handle
upward on the ground due to contact
A 72.3 kg man carrying a 5.23 kg box gets on an elevator. As the elevator accelerates upwards at 0.224 m/s^2, he feels the box is heavier, During this time, what is the weight on the floor from his feet
A 0.8 kg object that stretches a spring 7.3 cm from its natural length when hanging at rest oscillates with an amplitude of 7.3 cm. Find the total energy of the system. The acceleration due to gravity is 9.81 m/s2. Find the gravitational potential en..
particles 1 and 2 are fixed in place on an x axis at a separation of l 8.00cm. their charges are q1 e and q2 -
A point charge of -2.03C is located in the center of a spherical cavity of radius 6.55cm inside an insulating spherical charged solid. Calculate the magnitude of the electric field inside the solid
a polymer molcule is 3.05μ m long. the ends of themoleculebecome singly ionized-negative on end end, determine the effective spring constant of the molecule
As a summer intern for a microscope company, you are designing a compound microscope for a client that provides you with the following information. determine the barrel length needed for the microscope
A hydraulic jack is made by a small piston 1.3 cm in diameter that is utilized to move a large piston 6.1 cm in diameter. If a man can exert a force of 360 N on the small piston, how heavy a load can he lift by the jack?
An object is placed 13.5 centimeter in front of a convex mirror, the image being 3.81 centimeter behind the mirror. Find how far in front of mirror is second object placed
a large fake cookie sliding on a horizontal surface is attached to one end of a horizontal spring with spring constant
A paperweight, when weighed in air, has a weight of W =4.19 N. When completely immersed in water, but, it has a weight of Win water = 3.01 N. Discover the volume of the paperweight.
A capacitor has parallel plates of area 12 cm2 separated by 4.5mm . The space between the plates is filled with polystyrene, Find the induced surface-charge density on the surface of the dielectric
A 1200 kg ore cart is rolling at 10.8 m/s across a flat surface. A crane dumps 691 kg of ore (vertically) into the cart. How fast does the cart move after being loaded with ore
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