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Jack and Jill ran up the hill at 3.5 m/s. The horizontal component of Jill's velocity vector was 2.5 m/s. Determine what was the angle of the hill? Determine what was the vertical component of Jill velocity?
what is the concentration of h ions in a solution of hydrocholoric acis that was prepared by diluting 15.0 ml of
In a Rotor-Ride at a carnival, riders are pressed against the inside wall of a vertical cylinder 2.00 m in radius rotating 1.10 revolutions per second when the floor drops out. What is the speed of a rider in m/s
A log splitter uses a pump with hydraulic oil to push a piston, which is attached to a chisel. find the power needed to operate the log splitter's pump
A mass on a string of unknown length oscillates as a pendulum with a period of 6 s. What is the period in the following situations, determine The mass is doubled
Light of wavelength 700 nm is incident on the face of a fused quartz prism (n = 1.458 at 700 nm) at an incidence angle of 72.4°. Calculate the angle of refraction at the first surface
The linear acceleration of the center of mass of a yo-yo is 2.0m/s^2 as it rolls by gravity down its string. what is its rotational inertia
Rico slides a 60-kilogram crate up an inclined ramp 2.0-m long onto a platform 1.0 m above floor level. A 400-N force, parallel to the ramp, is required to slide the crate up the ramp at a constant speed.
In a piston cylinder assembly , the pressure and the tempreture of air are 200 KPa and the 500 c initially. The piston cross-sectional area is 0.2 m^2.The air is now cooled. what is the pressure in the cylinder
a concave spherical mirror has a radius of curvature of magnitude 17.4 cm. a determine the object position for which
Two converging lenses, each of focal length 14.9 cm, are placed 39.4 cm apart, and an object is placed 30.0 cm in front of the first lens. What is the magnification of the system
if an object is near the surface of the earth the variation of its weight with distance from the center of the earth
A lead block is suspended from the underside of a 0.8 kg block of wood of density of 720 kg/m3. what is the mass of the lead block
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