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Q1. A 9.05 kg projectile is fired vertically upward. Air drag decreases the mechanical energy of the projectile-Earth system by 77.5 kJ throughout the projectile's ascent. How much higher would the projectile have gone were air drag negligible?
Q2. The leg and cast in the weigh 369 N (w1). Find the weight w2 and the angle alpha needed so that no force is exerted on the hip joint by the leg plus cast.
A block of wood is compressed 2.4nm when inward forces of magnitude 128N are applied to it on two opposite sides. what is the effective spring constant of the block
If the maximum acceleration that is tolerable for passengers in a subway train is 2.45 m/s2 and subway stations are located 840 m apart, What is the travel time between stations
The parallel metal plate of a capacitor is detached by a distance of 0.5cm and is connected to a 90v battery. Find the electric field between them and surface charge density on the plate.
An archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed of 2.20 m/s on a smooth, What is the speed of the arrow after passing through the target
find the magnitude and direction of the field at this point.
Batman (mass = 102 kg) jumps straight down from a bridge into a boat (mass = 550 kg) in which a criminal is fleeing. What is the velocity of the boat after Batman lands in it
A particular fish tank filled with fresh water (n=1.33) has a coral reef sticker stuck to an exterior wall(outside of the tank). What is the index of refraction of the tank's walls
A circular wire loop whose radius is 15.0 cm carries current of 2.50 A. What torque acts on the loop
Calculate the peak voltage of a generator that rotates its 205 turn, 0.100 m diameter coil at 3600 rpm in a 0.850 T field
A thyroid cancer patioent is given a dosage of 131I, What faction of the dosage will still be in the patient's thyroid
The radius of curvature of a convex mirror is 1.60 x 10^2 cm. An object that is 14.0 cm high is placed 40.0 cm in front of this mirror. Find out (1) the location and (2) the height of the image.
How much does it cost to cook food in a 12,000 W oven for 47.6 minutes? Assume electricity costs 8.0 cents per kW·h
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