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We want to launch the package in such a way that it will never come back, and when it is very far from the asteroid it will be traveling with speed 187 m/s. We have a large and powerful spring whose
What is the maximum mass of lead you could melt with 1000;{rm J} of heat, starting from 20^circ rm C?
Find the average magnitude of the induced emf if the change in shape occurs in 4.07 s, and the local 0.108 T magnetic field is perpendicular to the plane of the loop.
Oversize wheels give too low a reading, because they really travel farther per revolution than the speedometer indicates; and undersize wheels give too high a reading because the wheels do not go as
Find the magnitude of the electric field. Use 1.60×10-19 C for the magnitude of the charge on an electron and 1.67×10-27 kg for the mass of a proton. Find the speed of the proton at the mo
Water being diverted during a flood in Helsinki, Finland (latitude 60? N) flows along a diversion channel. On which side is the water highest (from the standpoint of a noninertial system) and by how m
A 25000 kg rocket ship accelerates upwards due to constant 1.25MH of thrust from its engin. A simple pendulum on the ship is observed to complete 100 full swings in 75 seconds. What is the length o
A 12.39 g sample of phosphorus reacts with 42.54 g of chlorine to form only phosphorus trichloride. if it is the only product, what mass of PCl3 is formed?
A submarine dives 110.0 m at an angle of 10.0° below the horizontal. What are the horizontal and vertical components of the submarine's displacement? (Assume that upward and the direction of th
A bucket of water is to be swung in a vertical circle without a drop of water being spilled. If the circle has a radius of 0.80m, what must be the minimum speed of the upside down bucket at the top
It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.200 s, what is the average force exerted by the wall on the ball?
In a game of tug of war, one person pulls with force of 100N to the left, and the other pulls with a force of 60N to the right. What is the net force and direction of the net force and acceleration
138g of potassium and 448g of iodine react completely to form iodine. if 138g of potassium and 41g of iodine has been used, what mass of KI would have been produced ?
A satellite has a mass of 6168 kg and is in a circular orbit 4.03 × 105 m above the surface of a planet. The period of the orbit is 2.1 hours. The radius of the planet is 4.50 × 106 m. W
A river flows due east at 1.56 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.9 m/s due north relative to the water.
The vibrating portion of the guitar string has a length of. What is the speed of transverse waves on the guitar string?
A uniformly charged disk of radius 35.0 cm carries charge with a density of 7.90 x 10-3 C/m2. Calculate the electric field on the x axis of the disk at (a) 1.00 cm, (b) 5.00 cm, (c) 30.0 cm, and (d
Assume that the spring has negligible mass and that all its stored energy is transferred to the particles. Once that transfer is complete, what are the kinetic energies of (a) particle A and (b) par
CaC2(s) + 2H2O(l) = C2H2(g) + Ca(OH)2(aq) . If 48 g of CaC2 are consumed in this reaction, how much H2O is needed?
A steel ball of mass 0.400 kg is fastened to a cord 75.0 cm long and fixed at the far end. It is released when the cord is horizontal. At the bottom of its path, the ball strikes a 3.80 kg steel blo
A.) What is the potential energy of the third charge if it is placed at x= 10.00cm. B) Where should the third charge be place to make it's potential energy 0?
Calculate the change in one day, given that the rotational period of 24.0 h decreases by about 11 µs each year. (Let 1 yr = 365 d).
A 3.0-m-long rigid beam with a mass 130 is supported at each end. An 75 student stands 2.0 from support 1. How much upward force does support 1 exert on the beam?
The specific heat of mercury is 138 J/kg Co Determine the latent heat of fusion of mercury using the following calorimeter data: 1.00 kg of solid Hg at its melting point of -39.0º C is placed
Densit gold is 19.31 g/cm3 and density of platinum is 21.43 g/cm3 if equal masses of gold and platinum are transferred to equal volumes of water in separate graduated cylinders which graduated cylin