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A 1590 kilogram car traveling with a speed of 27 m/s. Obtain what is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 50 meter?
a baseball just clears a 3.20-m wall that is 113 m from home plate. if the ball leaves the bat at 35.0deg and 1.20 m
A wooden block of mass M resting on a frictionless, horizontal surface is attached to a rigid rod of length and of negligible mass. What is the angular momentum of the bullet-block system about a vertical axis through the pivot
a to a closed system we add 28 kj of heat while its internal energy decreases by 24 kj. how much work do we gain or
What is the total charge. Find the electric field at the ends of the following radial distances from the long axis of the cylinder at r=7.1cm and r=11cm
A projectile is fired directly upward at such an initial velocity that it reaches half its height of 45 meters. Determine the speed of the projectile at the top of the trajectory
A 7.0 gram bullet is fired into a 1.5 kilogram ballistic pendulum. Evaluate what is the initial speed of the bullet
Consider a balloon being filled up with oxygen. You have approximately 30 moles of oxygen gas in this balloon with volume 1.3 m^3. compute the temperature of the molecules
find static friction between the chair and the floor.
A high-energy pulsed laser emits a 1.5-ns-long pulse of average power 2.6×1011 W. The beam is 2.3×10?3 m in radius. Determine the rms value of the electric field
A screen is placed 51.0 cm from a single slit that is illuminated with light of wavelength 677 nm. If the distance between the first and third minima in the diffraction pattern is 2.80 mm, what is the width of slit.
In the "free electron molecular orbital" (FEMO) theory, the electrons in a conjugated molecule are treated as independent particles in a box of length L. Predict the minimum excitation energy in butadiene.
when a 50 mf capacitor is attached to an ac source its capacitive reactance is 40 ohms. if instead a 100 mf capacitor
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