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Q1. As part of a safety investigation, two 1300kg cars travelling at 18m/s are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.8s to stop, and (b) car that hits a concrete barrier and takes 0.5s to stop.
Q2. A doubly charged helium atom whose mass is 6.6 10 to 27 kg is accelerated by a voltage of 2200 V.
What will be its radius of curvature if it moves in the plane perpendicular to a uniform 0.308 T field?
A transparent cylinder of radius R = 2.00 m has a mirrored surface on its right half, Determine the index of refraction of the material
An engine has a maximum theoretical efficiency of 45%. If the temperature difference between the input, what is the exhaust temperature
What is the force acting on the board because of the left support when a diver of mass 63.20 kg stands at the end of the board over the water? Suppose that these forces are vertical.
The outer edge of the grooved area of a long-playing record is at a radial distance 35 cm from the center; What is the radial speed of the needle
26 g of copper pellets are removed from a 300 degree Celsius oven and straight away dropped into 116 mL of water at 25 degree Celsius in an insulated cup. What will the new water temperature be.
A 17.6kg dog is running northward at 2.87m/s , while a 6.33kg cat is running eastward at 3.99m/s. Find the direction of the owner's velocity
If someone is running in a 100m race and you want to work out the distance the sprinter has run what part of the sprinters body do you measure from the foot head or arm
When we look at a particular star, we are seeing it as it was 878 years ago. How far away from us (in meters) is the star
The drawing shows two frictionless inclines that begin at ground level (h = 0 m) and slope upward at the same angle ?. find the height H for the block on the longer track
A very small object carrying -3 x 10-6 C of charge is attracted to a large, How much Kinetic Engergy does the negatively charged object gain
A ball is thrown toward a cliff of height h with a speed of 29m/s and an angle of 60? ^\circ above horizontal. It lands on the edge of the cliff 3.5s later. How high is the cliff
question1a robot arm that controls position of the video camera in an automated surveillance system is manipulated by a
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