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An impulse of150 Ns is required to stop a person's head in a carcollision. If the face is in contact with the steering wheelfor 0:0304 s, what is the force on the cheekbone? Answer in units of N.
If a force of895 N fractures the cheekbone, how long must it be in contact withthe steering wheel in order to fracture? Answer in units of s.
If you stand on a pogo stick, you note that its spring-loaded foot is pushed in about 18 cm. what is your approximate oscillation frequency
An object is placed directly between a large planet and a star. Find the distance from the planet for which the net gravitational force exerted by the planet and by the star on this object is zero. DATA: Mstar= 1.90E+30 kg, Mplanet= 6.90E+25 kg, Dpla..
Calculate the momentum of a photon having a wavelength of 53.0 nm and Find the velocity of an electron having the same momentum
Find out ratio of the detector
A 18cm tall image is located at 4 cm behind a concave mirror with a focal length 5 cm. Find the location of object, its height, and the magnification
A T-bar tow is used to pull 80 skiers up a 600-m long slope inclined at 15.0 degrees to the horizontal at a speed of 2.5m/s. Find the motor power required to run the T-bar
A 73.6 kg weight-watcher wishes to climb a mountain to work off the equivalent of a large piece of chocolate cake rated at 514 (food) Calories. How high must the person climb
A new plant oil is discovered that is easy to recover from the plant and it might be a useful fuel. A question is the energy density of the fuel. Calculate the energy-density of this "new fuel"
Astronomers have discovered a planetary system orbiting the star Upsilon Andromedae, which is at a distance 4.2 1017 m from the earth. what is the minimum necessary aperture diameter that a telescope must have
An unstrained horizontal spring has a length of 0.33 m and a spring constant of 260 N/m. Determine the possible algebraic signs
A cyclotron (see figure below) designed to accelerate protons has an outer radius of 0.333 m. Find the speed at which protons exit the cyclotron
A batter hits a baseball straight upward at home plate and the ball is caught by the catcher 5.0 s after it is struck. What is the speed of the ball when it is caught
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