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Q1. A dog pulls on the pillow with a force of 8.6 N at an angle of 22° above the horizontal. What is the forward or x component of this force?
Q2. For the Atwood's machine, suppose the masses have an initial speed of v = 0.22 m/s and that m2 is moving upward. How high does m2 rise above its initial position before momentarily coming to rest, given that m1 = 3.5 kg and m2 = 3.1 kg?
What is the speed of the projectile immediately before it hits the ground if air friction does one and a half times as much work on the projectile when it is going down as it did when it was going up.
A spring with spring constant 14 hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is then pulled down 3.0 and released. The ball makes 17 oscillations in 16 seconds. What is it the mass of ball.
Determine the efficient spring constant of the molecule
What is the wavelength of the light in the glass
What is amplitude of the electric component of the signal
Assume the charge on black hole is 5740 C. At what distance from it is the electric potential equal to 1100 V.
A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is at first at rest, then moves at a speed of 0.20 m/s along conveyor belt. What is the instantaneous power generated by this machine .
Find out a magnitude and direction of the electric field
For safety in climbing, a mountaineer uses a nylon rope that is 69 m long and 1.0 cm in diameter. Whilst supporting a 96-kg climber, the rope elongates 1.4 m. Find its Young's modulus.
A 2.0-C charge moves with a velocity of (2.0i + 4.0j + 6.0k) m/s and experiences a magnetic force of (4.0i - 20j + 12k) N. The x component of the magnetic field is equal to zero. Find out the y component of the magnetic field.
Find out the potential difference between r2 and r1
Find the lowest energy of the system (in electron volts) and list the quantum numbers of all occupied states. Find when the current in the solenoid increases to 5.0 A in a period of 0.90 s.
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