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Q. An antitank weapon fires a 3.00 kg rocket which acquires a speed of 50m/s after travelling 90cm down a launching tube. Assume the rocket was accelerated uniformly, what force acted on it?
Q. What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20^circ {rm C}? Assume that the air bubble is always in thermal equilibrium with the surrounding water.
A world class sprinter accelerates to his maximum speed in 3.80 s. He then maintains this speed for the remainder of a 100 m race, finishing with a total time of 10.30 s. What is the runner's average acceleration throughout the first 3.80 s.
What is the ratio of the cardinals magnitude. One mole of tungsten (6 1023 atoms) has a mass of 184 grams, and its density is 19.3 grams per cubic centimeter. You have a long thin bar of tungsten, 2.3 m long, with a square cross section, 0.15 cm on..
Find out the overall change in internal energy between the initial and final states per unit mass of water.
An unmarked police car, travelling a constant 94 km/h, is passed by the speeder travelling 153 km/h. precisely 0.70 s after the speeder passes, policeman steps on the accelerator. If the police car's acceleration is 2.30 m/s^2, how much time elapses ..
A car moving at 10 m/s crashes into a barrier and stops in 0.50s. There is a 20kg child in the car. Suppose that the child's velocity is changed by the same amount as the cars in the same time period.
Two particles are separated by a certain distance. The force of gravitational interaction between them is Fsub 0. Now the separation between the particles is tripled. Find out the new force of gravitational interaction Fsub 1. Express your answer ..
find the x and y components of each vector.
The hydraulic cylinder is subjected to 3 forces. An 8kN force is exerted on cylinder at B that is parallel to the cylinder and points from B towards C. The link AC exerts the force at C that is parallel to the line from A to C. The link CD exerts ..
What is the new frequency of the string that was tightened. find the magnitude of the net force acting on the car during this time.
A wheel rotating about a fixed axis has an angular position given by q = 3- 2.0t3, where q is measured in radians and t in seconds. What is angular acceleration of the wheel at t = 2.00s.
A pulsar is a rapidly rotating neutron star that continuously emits a beam of radio waves in a searchlight manner. Each time the pulsar makes one revolution, the rotation beam sweeps across the earth, & the earth receives a pulse of radio waves. ..
The latent heat of fusion
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