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Question: A man is going to complete a full vertical loop around a post to which a swing is attached. The swing's rope mass is negligible. If the length of the swing's rope is 3m, what is the minimum speed that the man must have at the top of the swing's circular trajectory such that the rope does not collapse? What is the speed of the man at the bottom of the swing's circular trajectory using the man's speed at the top of the swing's trajectory found previously?
The bowling ball can be considered a smooth sphere (Cd = 0.1), while the basketball can be considered a rough sphere (Cd = 0.4).
Find what must be the resolving power of a grating allowing a spectral line at 601.10 nm to be distinguished from another line differing by 0.38 nm
Three resistors, 28, 48, and 80 ?, are connected in series, and a 0.53-A current passes through them. What is the potential difference across the three resistors
The distance between the endpoints is 2.79m and exactly 8 cycles are completed in 22.0 seconds. what is the radius, (in meters) and angular velocity of the circular motion
An electron enters a region of a uniform electric field (E= 50 N/C) with an initial velocity of 40Km/s directed the same as the electric field. what is the speed of the electron 1.5ns after entering this region?
A disk-shaped space station 175 m in diameter spins uniformly about an axis perpendicular to the plane of the disk through its center. How many rpm (rev/min) must this disk make
A capacitor of capacitance C = 4.5 µF is initially uncharged. Immediately after the switch is closed, find what is the voltage drop VC across the capacitor
If a sample of Na18F has an approximately constant activity of 1011 decays/sec over a time interval of 2 minute, and all of the emitted
A satellite is in a 95.0 min period circular orbit 380km above Earth's surface. Find the satellite's speed
A skateboarder shoots off a ramp by a velocity of 6.8 m/s, directed at an angle of 54° above the horizontal. The end of the ramp is 1.1 m above the ground. Let the x axis be parallel to the ground, they direction be vertically upward, and take as the..
When a 58-g tennis ball is served, it accelerates from rest to aspeed of 39 m/s. The impact with theracket gives the ball a constant acceleration over a distance of 37 cm. What is the magnitude of the netforce acting on the ball?
A 77.4 kg manm lifts a 1.3 kg box from the floor a height of 1.1m in 2.1 seconds, what is the change in gravitational potential energy
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