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An astronaut on a space walk discovers that his jet pack no longer works, leaving him stranded 40 meter from the spaceship. If the jet pack is removable, describe how the astronaut can still use it to return to the ship.
The length of nylon rope from which a mountain climber is suspended has a force constant of 1.10 ? 104 N/m. What is the frequency at which he bounces
A small disk (not sphere) of radius a and charge +Q is concentric with larger disk, connected to a thin ring of radius b and charge -Q. What is the total capacitance
A resistance R and a 3-H inductance are in series across a 60-Hz ac voltage. What is the ac input voltage
An L-C circuit containing an 73.5-mH inductor and a 1.05-nF capacitor oscillates with a maximum current of 0.705 A. Calculate the oscillation frequency of the circuit
A placekicker must kick a football from a point 36.0 m (about39.0 yd) fm the goal, and the ball must clear the crossbar, whichis 3.05 m high. Does the ball approach the cross bar while still rising orwhile falling
A cement block accidentally falls from rest from the ledge of a 72.6 -m-high building. How much time, at most, does the man have to get out of the way
A coaxial cable consists of a cylindrical metal sheath of radius b=3.5cm surrounding a conducting wire with outer radius a=.6cm
A shotputter throws the shot with an initial spped of 15.5m/sat 34.0degree angle to the horizontal. Calculate the horizontal distance travelled by the shot
The escape speed from the Earth is 1.12 × 10^4 m/s, so a gas molecule traveling away from Earth near the outer boundary of the Earth's atmosphere would, at this speed, be able to escape from Earth's gravitational field.
what is refraction? how and why does it occur? why does light change its speed as it passes from one medium to
A storage tank has a diameter of 80 ft, a height of 25 feet, andcontains oil to a height of 15 ft. The suction pumps, whichcan handle 15, 000 bbl/d are started, but the safety valves areclogged and a vacuum is drawn in the tank.
Two capacitors, C1 = 6.00 µF and C2 = 14.0 µF, are connected in parallel, and the resulting combination is connected to a 9.00-V battery. Find the potential difference across each capacitor
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