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An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. But she does have devices to measure distance and time accurately. She knows her own mass is 79.8 , but she is unsure of the mass of a large gas canister in the airless rocket. When this canister is approaching her at 3.70 , she pushes against it, which slows it down to 1.00 (but does not reverse it) and gives her a speed of 2.50. what is the mass of this canister? How much kinetic energy is lost?
An object moves with constant acceleration 4.35 m/s2 and over a time interval reaches a final velocity of 11.0 m/s. What is the distance it travels during this interval
A galvanometer with a full-scale sensitivity of 800uA and a coil resistance of 54 ohms is to be used to build an ammeter designed to read 6.0A at full scale
During a drive by golfer, the angular velocity of his club is zero at the top of the backswing and 34 rad/s at the bottom of the downswing just before impact with the ball, what is the average angular acceleration of the club
Two long parallel wires seperated by 50cm both carry currents of 4.0 A in the same vertically up direction. Find the magnetic field midway between the wires
A 224Ra atom (Z=88, Atomic mass = 224.020186 amu) consists of protons (Mass = 1.00728 amu), Calculate the binding energy per nucleon
A large plane having uniform charge density has an electric field just outside the plane that points directly toward the plane with magnitude 1.05×104N/C
A person runs with speed v toward a tunnel of length L, When the person and the photon eventually meet, the person's location is a fraction f along the tunnel. What is f
A researcher observes hydrogen emitting photons of energy 2.55eV. What are the quantum numbers of the two states involved in the transition that emits these photons
What is the magnitude of the electric force on an electron in a uniform electric field of strength 1510N/C that points due east
A small sphere with a mass of 1.0 g is suspended at the end of an insulating string of length 50 cm within a uniform horizontal electric eld of 12,000 N/C. What is the value of the charge on the small sphere
What is the total translational kinetic energy in a test chamber filled with nitrogen (N2) at 2.03×105 Pa and 20.7°C? The dimensions of the chamber are 3.00 m × 6.00 m × 8.30 m
A solution has a hydronium-ion concentration of 1.0 x 10-5 mol per liter. What is the hydroxide-ion concentration of this solution
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