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Q1. A krypton laser produces the cylindrical red laser beam 2.0mm in diameter with 2.0W of power. What is the light intensity on a wall 0.70 m away from the laser?
Q2. Estimate g for space shuttle territory, 180km above Earth's surface. Earth's mass is 6 x 10^24 kg and its radius is 6380km.
Q3. On a workday an average decibel level of the busy street is 89 dB, with 100 cars passing a given point every minute. If the number of cars is reduced to 30 every minute on a weekend, what is the decibel level of street?
Is the collision completely elastic
What travel time is required for the landing
The coefficient of kinetic friction
A 2.1-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall, as shown. The initial height of the block is 0.36 m above the lowest part of the slide and the s..
when the field is vertical to the plane of loop, when the field makes a 90.0 angle with the normal to plane.
What are the displacement and velocity of the point on the cord. What is the magnitude of the acceleration of one of the liners toward the other because of their mutual gravitational attraction.
What is an average velocity of the train throughout run
What is the mass of sculpture (in kg) assume that the local acceleration due to gravity is 9.80 m/s2.
A particle oscillates with S.H.M. The maximum displacement from its mean position is 0.5 meter and frequency of motion is 10 Hz. at time t=0, particle is located at 0.15 meter and has the velocity of 24.0 m/s towards the negative x-axis.
What is the net entropy change
What are the corresponding velocity vectors
A staging that weighs 440 N supports two painters, one 110 N and the other 460 N. The reading in the left scale is Ft = 800 N. What is the reading Fr, in the right hand scale.
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