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An iron block of unknown mass is heated to 200 degrees Celsius. It is then placed on a 500 gram block of ice at zero degrees Celsius. All of the ice melts and the final temperature of the system is zero degrees Celsius. What is the mass of the iron block?
A train is moving slowly eastward at 4m/s. A child in the train has sent his robot walking at 1.2 m/s from the left side to the right side of the train, How long does it take the robot to move across the train
A circuit consists of a battery connected to three resistors (65?, 26?, and 170?) in parallel. find the current through each resistor
A child throws a ball with an initial speed of 8:00m/s at an angle of 40 degrees above the horizontal, what is the magnitude of the ball's velocity just before it hits the ground
A helicopter is ascending vertically with a speed of 5.00m/s . At a height of 120m above the Earth, a package is dropped from a window. Evaluate how much time does it take for the package to reach the ground?
question1a space station in a form of a large wheel 271m in diameter rotates to provide an artificial gravity of 2.6
What is an average power output of the laser. What is the rms value of the electric field in the beam.
A man is stationary and he observes that the rain is striking him at 60? from the horizantal. When he starts moving with a velocity of 25 m/s, then he observes that the rain strikes him at an angle of 30? from the horizantal. Calculate actual velo..
A 1.50 kg block of wood sits at the edge of a table, 0.782m above the floor. A 0.0105 kg bullet moving horizontally with a speed of 770m/s embeds itself within the block. What horizontal distance does the block cover before hitting the ground.
Two blocks connected by a string are pulled across a rough horizontal surface by a force applied to one of the blocks, what is the magnitude of the applied force
The force on a particle is directed along an x axis and given by F = 0.97(x/4.6 - 0.52) where x is in meters and F is in Newtons. Find out the work done by the force in moving the particle from x = 0 to x = 8.9 m.
At the top of a 30m hill is a 5kg mass. It is loaded into a spring cannon. What is the ration of Energy before/Energy after
The electric field between two square metal plates is 130 N/C. The plates are 1.0 m on a side and are separated by 3.0 cm, Calculate the charge on each plate
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