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1. The Earth pulls down on you with a gravitational force that we call your weight. Do you pull up on the Earth with the same amount of force?
2. Explain a few examples in which the force of friction exerted on an object is in the direction of motion of the object.
3. Does a speeding missile possess force?
Two infinite positively charged plates with a uniform chargedensity of 6.80 mC/m2 are placedparallel to the yz-plane with one plane passing through x = 0.65cm and the other through x = -0.65 cm, as shownin the diagram below
A 10kg hammer strikes a nail at a velocity of 7.7m/s and comes to rest in a time interval of 9.0ms. What is the impulse given to the nail
A projectile is fired from point 0 at the edge of a cliff, with initial velocity components of v0x=60 m/s and v0y=175 m/s, What is the magnitude of the velocity of the projectile 21.0s after it is fired
An emf of 32 V is applied to a coil with an inductance of 34 mH and a resistance of 0.20 ?. How long does it take for the current to reach this value
A point charge with q1 = +2.8 C is located at x = 3.0 m, y = 0, and a second point charge with q2 = +4.4 C is at x = +1.0 m, y = +3.0 m. What are the components of the electric field at x = +1.0 m, y = 0
Here on Earth you hang a mass from a vertical spring and start it oscillating with amplitude 1.9 cm. How long does it take for the mass to make one round trip
Block one of mass 10kg is on a horizontal table. There is friction between the block and the table, the coefficient of kinetic friction is 0.25. Find the tension in the string and the acceleration
Your roommate is working on his bicycle and has the bike upside down. He spins the 64 -diameter wheel, what is the pebble's speed and acceleration
A voltage source given by v=100sin(754t) is connected in series to a 20(ohms) resistor, a 0.1x10^-6 uF capacitor and 4x10^-3 henries inductor. What is the frequency of the source
The pendulum of a regulator clock consists of a mass of 120 g at the end of a (massless) wooden stick of length 44 cm. What is the total energy (kinetic plus potential) of this pendulum
A student m1 = 70 kg runs towards his skateboard, which has a mass m2 = 2.6 kg and is d = 2.8 m ahead of him. What is the velocity of student and skateboard
The warm source of a Carnot cycle has a temperature off 100 C, while the cold source consists of melting ice. When the cycle operates for 1 hour it is observed that 1 metric ton of ice has melted. Calculate (a) the heat absorbed in the cycle from the..
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