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Q1. An 1100 {rm kg} wrecking ball hangs from a 15 {rm m}-long cable. The ball is pulled back until the cable makes an angle of 17.0^circ with the vertical.
Q2. Large quantities of nitrate (a mobile aninon) and an industrial solvent with a distribution coefficient of Kd =0.4 cm3/g were spilled on the soil surface. Meteorological data shows that annual rainfall and evaporation are 1000 mm and 550 mm, correspondingly. There is a water table at 60m below ground surface. Assume that the soil has an average water content of 2.5 kg/kg and a bulk density of 1500 kg/m3. Approximate the position of both peaks 30 years after they were spilled. Estimate the expected future arrival time of both peaks at the water table.
Find out distance the two drivers travel
A proton travels with the speed of 8.34×105 m/s at an angle of 32.3° with the direction of a magnetic field. The field exerts a force of 3.00×10-17 N on the proton. What is the strength of the field.
Work out the buoyant force due to the surrounding air on a man weighing 800 {rm N}. Imagine his average density is the same as that of water, and surrounding air temperature is 0 rm ^circ C.
What is clowns total displacement
What is the maximum amount of energy the incident electron can lose in elastically in this collision? What is left over energy of the electron.
Find out the friction force on the box
A rifle fires a 2.39 10-2-kg pellet straight upward, since the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed by 9.17 10-2 m from its unstrained length. The pellet r..
A cannonball launched with an initial velocity of 161 m/s at the angle of 45 degrees follows a parabolic path and hits a balloon at the top of its trajectory. Neglect air resistance, how fast is it going when it hits the balloon? What is the accelera..
A particle undergoes a displacement Δr of magnitude 57 m in a direction 25° below the x axis. Express Δr in terms of the unit vectors x and y.
An engine does 20000 J of work and rejects 6120 J of heat into a cold reservoir whose temperature is 285 K. What would be the smallest possible temperature of the hot reservoir.
A dam is used to block the passage of a river and to generate electricity. Approximately 5.73 x 10^4 kg of water fall each second through a height of 19.6 m. I one half of the gravitational potential energy of water were converted to electrical energ..
Explain the spacing between allowed vibrational energy levels
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