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Q. A large crate has a mass of 214kg. A horizontal force of positive 202.0N is applied to it, causing it to accelerate at 0.130m/s2 horizontally. What is the force of friction opposing the motion of crate?
Q. A 9 m, 220 N uniform ladders rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50° angle with ground. How far up the ladder can an 850 N person climb before ladder begins to slip?
A 318 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 624 mmHg. compute the moles of Ar present.
A 2.50 g bullet, traveling at a speed of 465 m/s, strikes the wooden block of a ballistic pendulum. The block has a mass of 275 g. What is the speed of the bullet/block combination immediately after collision.
A 7.40-nC charge is positioned 1.70 m from a 4.80-nC charge. (a) Find the magnitude of electrostatic force that one particle exerts on the other. (b) Is the force attractive or repulsive.
In a head-on collision, a car stops in 0.29 {s} from the speed of 28 {m/s}. The driver has a mass of 78 {kg}, and is, fortunately, tightly strapped into his seat. what force is applied to driver during that fraction of a second.
How much acceleration does a 747 jumbo jet of mass 45000 kg experience in takeoff as the thrust for each of four engines is 45000 N.
The net force on the object is not zero in Tubby's frame, but there is an inertial frame in which net force is zero.
Solve the algebraic expression by using power rules.
What are the velocities of the two people after the snowball is exchanged? Disregard friction between skate and the ice.
A classroom slide projector projects an enlarged (50 times taller) image of a 24mm high photographic film onto a screen located 10 meters from the projector. What focal length lens (cm) does the slide projector require to produce a sharply focus i..
What pressure is acting on the walls of drum
approximately what is the mass of an object whose weight equals the force from part "b"? can you lift such a mass.
An elastic cord is 66 cm long when a weight of 66 N hangs from it but is 86 cm long when a weight of 76 N hangs from it. What is the "spring" constant k of the elastic cord.
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