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Q1. A 4.00-kg model rocket is launched, expelling 54.9 g of burned fuel from its exhaust at a speed of 690 m/s. What is the velocity of the rocket after fuel has burned?
Q2. A 0.004 kg bullet, moving 536 m/s, strikes a 0.252 kg piece of wood at rest on a frictionless table. The bullet in wood and combined mass moves slowly down the table. Find out the speed of the combination after collision?
The rear window of a van is coated with a layer of ice at 0°C. The density of ice is 917 kg/m3, What is the maximum thickness of ice above this area that the defroster can melt in 4.4 minutes
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 51.0cm. find the magnitude of the gravitational acceleration on this planet
The position of a particle moving along an x axis is given by x = 22t2 - 3.0t3, where x is in meters and t is in seconds. Determine the position, velocity, and acceleration of the particle
A car rounds a 1.15 radius circular track at 82 Find the magnitude of the car's average acceleration
Calculate the efficiency of a fossil-fuel power plant that consumes 450 metric tons of coal each hour to produce useful work at the rate of 900 MW
A sphere of styrofoam with a density of 152 kg/m3 has a 45 cm diameter. what is the maximum iron mass that can be suspended by a string from it so that it does not sink
Four charged particles are at the corners of a square of side, Determine the total electric force exerted on q
A toy of mass 0.145kg is undergoing simple harmonic motion (SHM) on the end of a horizontal spring with force constant 300N/m . When the object is a distance 1.15×10-2m from its equilibrium position
The electric field at a distance of 0.148m from the surface of a solid insulating sphere with radius 0.367m is 1690N/C, Calculate the electric field inside the sphere at a distance of 0.217m from the center
q1. youre driving down the highway late one night at 20 rm ms when a deer steps onto the road 35rm m in front of you.
The wheel weighs 70 kg, and is 120 cm in diameter. you mount the wheel by its central axis, What is the angular velocity of the wheel at the end of the fall
A 250-g ball collides with a wall. The ball's velocity and the force exerted on the ball by the wall. What is v_{{rm{f}}x}, ball's rebound velocity.
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