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Q1. Change values of the initial position, initial velocity, and the acceleration of the car so that its center follows the same path as the dot. What is the equation that describes motion of the dot?
Express the answer in terms of. Enter all of the numbers in the equation without their units, as it is understood that you are using meters, meters per second, and meters per second squared for distances, speeds, and accelerations, correspondingly.
Q2. A 15 kg bullet leaves the barrel of a gun at a speed of 240.0 m/s.
(a) Find out the bullet's kinetic energy,
(b) find out the average force exerted on the bullet by the expanding gases as bullet moves through the length of the 50 cm barrel.
Three capacitors are arranged. C1 has a capacitance of 5.0 pF, C2 has the capacitance of 10 pF, and C3 has the capacitance of 15 pF. Find the voltage drop across the entire arrangement if the voltage drop across C2 is 311 V.
A parachutist and her parachuting equipment have the combined mass of 121 kg. Her terminal velocity is 5.30 m/s with the parachute open. Her parachute has a cross-sectional area of 35.80 m^2. The density of air at that altitude is 1.23kg/m^3. What is..
A 0.120 kg block on a horizontal frictionless surface is attached to the spring whose force constant is 572 N/m. The block is pulled from its equilibrium position at x = 0 m to a displacement x = +0.080 m and is released from rest. The block after th..
A 0.449 kg ice puck, moving east with a speed of 2.91 m/s, has the head-on collision with a 0.846 kg puck initially at rest. Assume a perfectly elastic collision, what will be the speed and direction of each object after the collision.
What is the smallest quantum of energy that can be absorbed by the molecule in a rotational excitation? What is the smallest quantum of energy that can be absorbed in a vibration excitation? In what regions of electromagnetic spectrum do the transiti..
A father (m = 90 kg) and son (m = 45 kg) are standing facing each other on a frozen pond. The son pushes on the father and finds himself moving backward at 3 m/s after they have separated. How fast is the father moving.
A mass m = 90 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 18.8 m and finally the flat straight section at the same height as the center of the loop (18.8 m off the ground). Because the mass would not..
As part of a safety investigation, two 1700kg cars travelling at 25 m/s are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.3 seconds to stop, and (b) car that hits a concrete ..
A tennis ball is thrown toward a vertical wall with a speed of 22.0 m/s at the angle of 40.0° above the horizontal. The horizontal distance between the wall and the point where the tennis ball is released is 28.0 m.
Potassium iodide has an interplanar spacing of d = 0.296 nm. A monochromatic X-ray beam shows first-order diffraction maximum while the grazing angle is 7.8°. Compute the X-ray wavelength λ .
How long does it take an automobile travelling 56.50 km/h to become even with a car that is travelling in another lane at 36.50 km/h if the cars' front bumpers are initially 148m apart.
The coefficient of kinetic friction between block and ramp
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