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Q1. A 2.75-mm-tall object is 8.0 cm to the left of a convex lens of 5.7 cm focal length. Find the image position and height.
Q2. A 29.0-kg body is moving in the direction of the positive x axis with a speed of 398 m/s when, owing to an internal explosion, it breaks into three pieces. One part, who's mass is 8.5 kg, moves away from the point of explosion with a speed of 319 m/s along the positive y axis. A second fragment, who's mass is 3.4 kg, moves away from the point of explosion with a speed of 418 m/s along the negative x axis. What is the speed of the third fragment? Ignore effects due to gravity.
If the contact time with the sidewalk is 1800s, what is the magnitude of an average force exerted on the superball by the sidewalk.
Compute the acceleration of each box decide maximum distance the car rolls up the hill
What is height of the cliff
A 7.40-nC charge is positioned 1.70 m from a 4.80-nC charge. (a) Find the magnitude of electrostatic force that one particle exerts on the other. (b) Is the force attractive or repulsive.
Discover the least value of initial velocity
You have a 56.9-mF capacitor initially charged to a potential difference of 10.1 V. You discharge the capacitor through a 4.77-Ω resistor. What is the time constant? After what multiple of the time constant does the potential difference reach 2.47 V.
A 120 g trick baseball is thrown at 51 km/h. It explodes in flight into two pieces, with a 50 g piece regular straight ahead at 86 km/h. How much energy do the pieces gain in the explosion.
Find out the precession period of the axis
What is magnitude of the change in the magnetic field
Compute the magnitude of the average acceleration
A cube of ice is taken from the freezer at -9.4°C and placed in a 94 g aluminium calorimeter filled with 315 g of water at room temperature of 20°C. The final situation is observed to be all water at 19°C. What was the mass of ice cube.
What is fraction of the diameter of the Sun
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