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A bobsled slides down an ice track starting (at zero initial speed) from the top of a 53.9 meter high hill. The acceleration of gravity is 9.8 m/s^2. Ignore air resistance and friction; calculate the bobsled speed at the bottom of the hill. Answer in units of m/s.
An escalator is needed to carry 80 passengers per minute a vertical distance of 7.0 meter. Mass of each passenger is 65 kilogram. Determine the total amount of work
the two rods are placed in series 0 c to 100 c. l 1.05m half lead and half copper. find a the temperature at the
A kicker punts a football from the very center of the field to the sideline 36 yards downfield. What is the direction of the net displacement of the ball
An object falls because of gravity at the rate of -920 cm/s2 (- sign is indicative of a downward direction) for 10.00 Seconds. If it starts from rest (vo = 0) and its position starts from do= 0.0, where is it 10.00 Seconds later.
if a planet has a radius 20% greater than of the earth but has the same mass as the Earth, what is the acceleration due to gravity at its surface
A 65-g ice cube at 0°C is placed in 874 g of water at 23°C. What is the final temperature of the mixture
A conducting slab (think of a large flat sheet of metal) is large compared to the size of individual particles and molecules, Where does the excess charge reside
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.13 x 104 m/s, and the radius of the orbit is 3.77 x 106 m. What is the orbital speed of the second satellite
two 10 cm-diameter charged disks face each other 29cm apart. the left disk is charged to - 50 nc and the right disk is
Consider an electron in a hydrogen atom, which is 0.050 nm from the proton in the nucleus, What electric field does the electron experience
A boy and a girl are balanced on a massless seesaw. The boy has a mass of 75 kg and the girls mass is 50 kg. find where must the girl sit on the other side
Two identical guitar strings are prepared such that they have the same length (1.91 m) and are under the same amount of tension, What is the wave propagation speed on the guitar strings
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