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A tortoise can run with a speed of 14.0 cm/s, and a hare can run 20 times as fast. Ina race, they both start at the same time, but the hare stops torest for 3.0 minutes. The tortoisewins by a shell (20 cm).
(a) How long does the race take?
s
(b) What is the length of the race?
m
You stand in the earth's magnetic field, directly facing it's horizontal component ( in other words, facing magnetic south). Compute the outward flux through your body's back surface
A lead fishing weight with a mass of 57.0g absorbs 146cal of heat. If its primary temperature is 50 C, what is its final temperature.
The inside of the cylindrical can shown above has cross-sectional area 0.005 m^2 and length 0.15 m. The can is filled with an ideal gas and covered with the loose cap. The gas is heated to 363K and some is allowed to escape from the can so that re..
In Europe, a large circular walking track with a diameter of 0.900 km is marked in angular distances in radians. How many radians should he walk per day to maintain his daily routine
A man enters a tall tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the floor and that its period is 24.0 s. How tall is the tower
A 20 Kg loudspeaker is suspended 2.0 m below the ceilling by two cables that are each 30' from vertical . What is the tension in the cables
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. evaluate the astronaut's orbital speed
A 7.50-nC charge is located 1.80m from a 4.20-nC charge, find the magnitude of the electrostatic force that one particle exerts on the other
A small 12.3g plastic ball is tied to a very light 26.6cm string that is attached to the vertical wall of a room. A uniform horizontal electric field exists in this room. Find the magnitude of the electric field in the room
A slit of width 2.0 ?m is used in a single slit experiment with light of wavelength 650 nm. If the intensity at the central maximum is Io, what is the intensity 10° from the center?
The coefficient of static frictionbetween hard rubber and normal street pavement is about 0.8. On how steep a hill (maximun angle) can you leave a carparked
A rail car that weighs 28 N is accelerated at 3.6 m/s/s for 2.2 seconds. How much work is done on the rail car
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