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A 96.0 Kg man stands on a bathroom scale in an elevator that is accelerating upward at a rate of 1.90m/s^2.
A.) What is the bathroom scale reading in lbs?
B.) the same 96.0 kg man stands on a bathroom scale in an elevator that is accelerating downard at a the reate of 2.10 m/s^2. What is the bathroom scale reading in lbs?
A ball is placed on an edge of a cliff and it is kicked by a soccer player at 20.0 m/s at an angle of ? = 30? above the horizontal, Find the height of the cliff
Over a time interval of 2.16 years, the velocity of a planet orbiting a distant star reverses direction, Find the total change in the planet's velocity in m/s
While running home from second base a 67 kg runner rounds third base at a speed of 3.1 m/s, What is the centripetal force of this turn on third base
When it rains water vapour in the air condenses into liquid water and energy is released. How much energy is released when 0.0244m of rain falls over an area of 2.59 x 10^6 m^2? If the average energy needed to heat one home for a year is 1.40 x 10^11..
A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. What is the force exerted by the muscle if its effective perpendicular lever arm is 2.10 cm
The windpipe of a typical whooping crane is about 4.5 feet long. What is the lowest resonant frequency of this pipe
A massive steel cable drags a 25-kg block across a horizontal, frictionless surface. A 90.0 N force applied to the cable causes the block to reach a speed of 4.5m/s in 1.5s. What is the difference in tension between the two ends of cable.
A grating has 530 rulings/mm and is 5.4 mm wide. How many higher orders of maxima can be seen
A monatomic ideal gas ( = 1.67) is contained within a box whose volume and pressure are 3.1 m3, Find the speed of sound in the gas
A car is parked 21.0 m directly south of a railroad crossing. A train is approaching the crossing from the west, What frequency does the car's driver hear when the horn blast reaches the car
Three capacitors, C1 = 3.30 µF, C2 = 7.26 µF, and C3 = 1.23 µF, are connected in series, What is the charge on the positive plate of the capacitor C2
At every point on the surface of a sphere of radius 0.4 m the electric field is radially outward, with a magnitude of 20 N/C
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