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A 100 kg crate is pushed at constant speed up the frictionless 31° ramp shown in the figure. What horizontal force F is required?
According to the law x =a sin2(wt - pi/4), a point moves along the x axis, Find the amplitude & period of oscillations
a typical hard drive in a computer spins at 5400rpm. what is the period in seconds
A hotel elevator ascends 200 m with maximum speed of 5m/s . Its acceleration and deceleration both have a magnitude of 1.0 m/s^2 . a.)How far does the elevator move while accelerating to full speed from rest?
A flight attendant pulls her 73 N flight bag a distance of 245 m along a level airport floor at a constant velocity. The force she exerts is 45 N at an angle of 54° above the horizontal.
At the start of a race, a four-man bobsled team pushes their sled as fast as they can along a 50 m flat starting stretch. What is the speed of the sled right before the team jumps on the sled
Phil is standing on a third floor balcony, 10m above the ground. Where does the ball hit the ground
A thermos contains 165 cm3 of coffee at 85° C. To cool the coffee, you drop two 14-g ice cubes into the thermos. The ice cubes are at first at 0° C and melt completely. What is the final temperature of coffee? Treat the coffee as if it were water.
An air core solenoid is used as an inductor in an oscillating LC circuit with a 1.50 \muF capacitor. The solenoid had a diameter of 6.40 cm, Find the number of turns in the solenoid
An infinite non conducting sheet has a surface charge density σ = +5.80 pC/m2. (a) How much work is completed by electric field because of the sheet if a particle of charge q = +1.60 × 10-19 C is moved from the sheet to a point P at distance d = 3.56..
A small object of mass 2.00×10?2kg and charge 3.0uC hangs from the ceiling by a thread. obtain the tension in the thread
A 20.0cm -diameter cylinder of helium gas is 50.0cm long and at 30.0 ?C. The pressure gauge reads 130psi, How many helium atoms are in the cylinder
A liquid is flowing through a horizontal pipe whose radius is 0.0216 m. What volume flow rate will keep the pressures in the two horizontal pipes the same
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