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A model rocket is constructed with a motor that can provide a total impulse of 29.0 Ns. The mass of the rocket is 0.175 kilogram. Find the speed that this rocket achieves when launched from rest? Ignore the effects of air resistance and gravity.
a 180 g copper bowl contains 220 g of water both at 20.0degc. a very hot 300 g copper cylinder is dropped into the
What is the approximate mass of the cat.
Two inductors L1 = 1.17 H and L2 = 2.13 H are connected in parallel and separated by a large distance so that the magnetic field of one cannot affect the other, Calculate the equivalent inductance.
A 40.0 kg ballet dancer stands on her toes during aperformance with four square inches (26.0 cm^2) in contact with thefloor. What is the pressure exerted bt the floor over the area ofcontact in the following cases?
Two circus performers, Jack and Jill, whose total mass is 120 kg, start a swing which is 5 m long such that initially the rope attached to their swing makes an angle of 36 degrees with the horizontal.
In a head-on collision, a car stops in 0.3s from a speed of 30 m/s. What is the force applied to the driver by his seat belt during the collision
Some bacteria are propelled by motors that spin hair-like flagella.A typical bacterial motor turning at a constant angular velocityhas a radius of 1.9x10-8m, How long does it take the motor to make one revolution
A mass-spring system completes 7 full oscillations in a time of 14.4 seconds. What is the angular frequency of oscillation
determine the mass of liquid ammonia that boils away before thermal equilibrium. Assume an excessive amount of liquid ammonia is present and that the liquid ammonia does not react with the copper.
a standing wave that corresponds to the fourth harmonic is set up on a string that is fixed at both ends. if the
The two wires of length 2 m are 3 mm apart and carry a current of 10 A dc. Calculate the force between these wires
Estimate the particle density necessary for bose-Einstein condensation of a hydrogen gas to occur at 100 nK. find the ratio of the thermal wavelength to the atom spacing
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