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1. An automobile traveling on a straight, level road at 14 m/s speeds up to 25 m/s in 30 seconds. What was the magnitude of the auto's acceleration?
2. Two opposite forces of 6.0 N and 4.0 N act on a 2.0 kg object. What is its acceleration?
3. An automobile with a mass of 100 kg is moving north on a level highway with a constant velocity of 80 km/h. What is the net force acting on the automobile?
a spring with a mass on the end of it hangs in equilibrium a distance of 0.420 m above the floor. the mass is pulled
Light of wavelength 450 nanometers produces a first order maximum at 27o degrees when viewed through a grating. Find at what angle would a first order maximum occur
Determine the magnitude and direction of the force on a horizontal conductor 10cm long and carrying 25 amperes of current from south to north, if places in air in a horizontal magnetic field of flux density .8 w/m2 directed from east to west.
In the figure, four long straight wires are perpendicular tothe page, and their cross sections form a square of edge lengtha = 15.5 cm. Each wire carries 4.00 A, and the currents are out of the page in wires 1 and 4 and into the pagein wires 2 and..
Technetium-99 has an excited state that decays by emission of a gamma ray. The half-life o fthe excited state is 360 min. What is the activity, in curies, of 1.00mg of the excited isotope
a 0.145-kg baseball pitched horizontally at 39 ms strikes a bat and is popped straight up to a height of 41 m. if the
A piece of wood that floats on water has a mass of 0.0175kg. A lead weight is tied to the wood and the apparent mass with the wood in air and the lead weight submerged in water is 0.0765kg. what is the specific gravity of the wood
a 7500kg rocket blasts off vertically from the launch pad with a constant upward acceleration of 2.25ms -2 and feels
A car travels 2.87 km in the x-direction, then turns left 59.7? to the original direction and travels an additional distance of 2.65 km. Calculate the x component of the car's net displacement
A "seconds" pendulum is one that goes through its equilibrium position once each second. Find the ratio of free-fall accelerations at these two locations
a 6.1 microc charge is placed at the origin and a -3.8 microc charge is placed at x 25 cm. at what coordinates can a
Two charges of equal magnitude exert an attractive force of 6.5×10-4 N on each other. If the magnitude of each charge is +2.7 µC, how far apart are the charges
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