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Question1
Consider a thin rod of mass 1.4 kg, length 2.7 m and uniform density. The rod is pivoted at one end on a frictionless horizontal pin. The rod is at first held in horizontal position however eventually allowed to swing down. What is its angular acceleration at instant it makes an angle 68 ? with the horizontal? The acceleration because of gravity is 9.8 m/s 2. Answer in units of rad/s 2
Question2
A ball is thrown toward a cliff of height (h) with a speed of 30m/s and an angle of 60 degrees above horizontal. It lands on the edge of the cliff 4.0s later.
a) How high is the cliff?
b) What was an utmost height of the ball?
c) What is ball's impact speed?
Question3
When a guitar string is sounded along with a 436 Hz tuning fork, a beat frequency of 5.00 Hz is heard. While the same string is sounded along with a 434 Hz tuning fork, the beat frequency is 7.00 Hz. What is frequency of the string?
Two parallel metal rods form a plane inclined at 20.0° to the horizontal. The upper end of the rods are connected together by a resistor of 102.0 ?. What is the maximum speed of the bar
Find out the total work done on the car by the external forces.
Estimate the electric field at a point 2.40 cm perpendicular to the midpoint of a uniformly charged 2 m-long thin wire carrying a total charge of 4.10 microC.
a small ball bearing is illuminated with blue light from an argon ion laser (4880 A.) What is the diameter of the ball bearing
What is the coefficient of friction for the surface?
Determine the position of the GPS satellite relative to and from the center of the earth and ratio of clock rates on a GPS clock in orbit and one on the surface of the earth.
The block of mass M slides back along the horizontal surface with a coefficient of kinetic friction ?k and eventually comes to a rest. calculate the total trip time from bullet impact to now
A converging lens (f1 = 24.0 cm) is located 56.0 cm to the left of a diverging lens (f2 = %u221228.0 cm). How far is the object from the converging lens
A cylindrical container 1.1 tall contains mercury to a certain depth. The rest of the cylinder is filled with water.If the pressure at the bottom of cylinder is two atmospheres, what is the depth.
An automobile starter motor has an equivalent resistance of 0.0660 ? and is supplied by a 12.0-V battery with a 0.0170-? internal resistance. What is the current to the motor
The volume flow rate in an artery supplying the brain is 3.29E-6 m3/s. determine the average blood speed
What happens when a proton moves parallel to a magnetic field and when a proton moves perpendicular to a magnetic field
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