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A rocket, which is in deep space and initially at rest relative to an inertial reference frame, has a mass of 53.1 x 10^5 kg, of which 3.81 x 10^5 kg is fuel. The rocket engine is then fired for 420 s, during which fuel is consumed at the rate of 410 kg/s. The speed of the exhaust products relative to the rocket is 3.39 km/s.
(a) What is the rocket's thrust? After the 420 s firing, what are
(b) the mass and
(c) the speed of the rocket?
The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0 above the horizontal, some of the tiny critters have reached a maximum height of 52.7 above the level ground. What was the takeoff speed..
0.25 kg coffee mug is made from a material that has a specific heat capacity of 990 J/(kg°C) and contains 0.31 kg of water. determine the minimum power rating of this heater
A diathermy machine, used in physiotherapy, generates electromagnetic radiation that gives the effect of "deep heat" when absorbed in tissue
The secondary voltage of an ignition transformer in a furnace is 14.5 kV. When the primary operates at an rms voltage of 100 V, What is the impedance in the secondary
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The Trans-Alaskan pipeline is 1300 km long, reaching from Prudhoe Bay to the port of Valdez, and is subject to temperatures ranging from -69°C to +36°C. How can one compensate for this expansion
Much of the material making up Saturn's rings is in the form of tiny dust grains having radii on the order of 10-6 m. These grains are located in a region containing a dilute ionized gas, and they pick up excess electrons. As an approximation, sup..
The three charged particles in the figure below are at the vertices of an isosceles triangle (where d = 3.80 cm). calculate the electric potential at point A, the midpoint of the base
Two 3.0 g spheres are suspended by 11.0 cm long light strings. A uniform electric field is applied in the x direction. determine the electric field intensity that enables the spheres to be in equilibrium at ? = 9°
A light beam is incident on heavy flint glass (n=1.65) at the polarizing angle. Angle of refraction is 31.22 degrees. determine the change in the intensity
A pendulum consisting of a small sphere with mass 1.135 kg suspended by a string of length 72.23 cm is hanging from the ceiling. Its motion is restricted by a peg that is sticking out of the wall 43.03 cm directly below the pivot point. What is the p..
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