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Question1
An unstable nucleus of mass 3.4 10-26 kg, initially at rest at an origin of a coordinate system, disintegrates into 3 particles. One particle, having a mass of m1 = 1.0 10 to 26 kg, moves in positive y-direction with speed v1 = 6.2 106 m/s. Another particle, of mass m2 = 1.5 10-26 kg, moves in positive x-direction with speed v2 = 4.2 106 m/s. discover the magnitude and direction of the velocity of third particle.
Question2
An elevator is stopped at ground floor. It starts moving upwards at constant acceleration a>0 for 5 seconds. It then keeps a constant speed for 35 seconds. At last, it slows down with an acceleration of similar magnitude (but opposite direction) -a, until it comes to a halt at top floor. The top floor is 340 meters above ground floor. (a)What is maximal speed v of the elevator?
(b)What is acceleration a?
A dedicated sports car enthusiast polishes the inside and outside surfaces of a hubcap that is a thin section of a sphere. How far is her face from the hubcap
Calculate the mass of a solid gold rectangular bar with dimensions 3.50 cm x 14.0 cm x 27.0 cm. Density of gold is 1.93E4 kg/m^3
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. Liquid flows through the first segment at a speed of 4.0m/s. What is the speed in the second segment
Given two vectors a = 3.1i -3.4j and b =6.7i+8.7j, What is the magnitude (in m) of the vector a, Find the direction (in ° = deg) of the vector a, Find the magnitude of the vector b
A particle moving along the x axis in simple harmonic motion starts from its equilibrium position, the origin, at t = 0 and moves to the right. The amplitude of its motion is 1.70 cm and the frequency is 1.30 Hz.
A gas of diatomic molecules is in equilibrium at a temperature of 340 K. What is the mean angular momentum of the molecules
Suppose you have a 9.00 V battery, a 2.2uF capacitor, and a 9.05uF capacitor. Find the total charge stored in the system if the capacitors are connected to the battery in series in C
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 500-g sample of silver at an initial temperature of 85°C is placed in the water. Calculate the mass of the aluminum cup
If, instead, the gold is drawn out into a cylindrical fiber of radius 1.5µm, what is the length of fiber.
A block with a weight of 7.7 N is at rest on a horizontal surface. What is the magnitude of the force of the block on the horizontal surface
If the car is going 55m/s, how many meters will it travel before it stops? How many meters will it takes to stop car going twice as fast.
A single 212Po nucleus, initially at rest, emits an alpha particle as it decays into a 208Pb nucleus. What is the total amount of nuclear potential energy, in joules, that was released in this process
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