Equilibrium: Three objects are connected by weightless flexible strings as shown in the figure. The pulley has no appreciable mass or friction, and the string connected to the block on the horizontal bench pulls on it parallel to the bench surface. The coefficients of friction between the bench and the block on it are µs = 0.66 and µk = 0.325. You observe that this system remains at rest.(a) Find the mass of the hanging object A.(b) What is the magnitude of the friction force on the block on the bench?
Fill in the blank(s) with the appropriate word(s).
(a) 22 kg (b) 270 N
Physics & Space Science
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The branch of astronomy that studies the structure and evolution of the entire universe is called ______________
Fill in the blank(s) with correct word
Physics & Space Science
State Bernoulli's principle
Physics & Space Science
Constant Acceleration Kinematics: A car is traveling with a constant speed of 30.0 m/s when the driver suddenly applies the brakes, causing the car to slow down with a constant acceleration. The car comes to a stop in a distance of 120 m. What was the acceleration of the car as it slowed down?
A. 3.75 m/s2 B. 4.00 m/s2 C. 4.25 m/s2 D. 4.50 m/s2 E. 4.75 m/s2
Physics & Space Science
The Sun is located at the center of Earth's elliptical orbit.
Answer the following statement true (T) or false (F)
Physics & Space Science