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A car moving with constant acceleration covered the distance between two points 60m apart in 6s. Its speed as it passes the second point was 15m/s. (a) What was the speed at the first point? (b) What was the acceleration? (c) At what prior distance from the first point was the car at rest? (d) Graph x versus t and v versus t for the car, from rest (t=0).
How several meters away is a cliff if an echo is heard 0.587 s after the original sound? Assume that sound traveled at 343 m/s on that day.
A 0.24 meter stick balances at its center. If a necklace is suspended from one end of the stick, the balance point moves 8 toward that end. Is the mass of necklace more than, less than, or the same as that of the meter stick.
how to estimate the initial temperature of the hot horseshoe.
if a string vibrating at 42 hz has a standing wave with three antinodes at what frequency will it have a standing wave
Explain how does that compare with the heat needed to reaise the temp of the same mass of water through the same temp difference?
you have an irregular flat object mounted on a table so it can rotate freely about a central axis. you observed that if
In order for a middle to achieve a maximum range of 4,000km what would its maximum height be
you stand on a frictionless platform tha tis rotating with anangular speed of 1.5 rev/s. your arms are outstretched, what is the resulting angular speed of the platform
Sound is passing perpendicularly through an open window whose dimensions are 1.1 m x 0.75 m. How much sound energy comes through the window
A sports car, picking up speed, passes between two markers ina time of 4.1 seconds. the markers are separated by 120 meters. what is its speed at the second marker
A light beam is incident on heavy flint glass (n = 1.62) at the polarizing angle. Calculate the angle of refraction for the transmitted ray
question a sphere of mass 35kg is attached to one end of a rope. it is found that the rope does an amount w 550j in
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