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You inflate the front tires on your car to 29 psi. Later, you measure your blood pressure, obtaining a reading of 138/84, the readings being in mm Hg. In metric countries (which is to say, most of the world), these pressures are customarily reported in kilopascals (kPa). (a) What is your tire pressure in kilopascals? (b) What is your blood pressure in kilopascals?
q1. vector a points in the negative y direction and has a magnitude of 3 units. vector b has three times the magnitude
Suppose you could pack neutrons (mass = 1.67 × 10-27 kg) inside a small ball of radius 0.033 m in the same way as neutrons and protons are packed together in the nucleus of an atom. Approximately how many neutrons would fit inside the ball
A motorcycle moves in a flat circular path of radius R on a surface with a coefficient of kenetic friction of 0.25 and a coefficient of static friction of 0.35. How long does it take to complete one full circle
The electric motor of a model train accelerates the train from rest to 0.720 m/s in 27.0 ms. Find the average power delivered to the train during its acceleration
A device used in radiation therapy for cancer contains 0.83 g of cobalt-60 (59.933 819 u). The half-life of this isotope is 5.27 yr
Two parallel plates, each of area 3.72 cm2, are separated by 4.50 mm. The space between the plates is filled with air. Calculate the amount of the electric charge stored on each plate
An 8.57-kg block slides with an initial speed of 1.64 m/s up a ramp inclined at an angle of 27.3° with the horizontal. Use energy conservation to find the distance the block slides before coming to rest
A tetherball leans against the smooth, frictionless post to which it is attached. The string is attached to the center of the ball. If the string is L = 1.20m long and the ball has a radius of r = 0.150m with mass m = 0.250kg
A 200 ohm resistor is rated at 1/4 W. What is the maximum voltage that should be applied across it
A soccer ball is kicked with an initial speed of 27m/s at an angle of 23 degrees with respect to the horizon. Find the maximum height reached by the ball
An explosion breaks an object into two pieces, one of which has 1.5 times the mass of the other. how much kinetic energy did each piece acquire
A barge floating in fresh water (? = 1000 kg/m3) is shaped like a hollow rectangular prism with base area A = 650 m2, Find the mass of the coal in kilograms
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