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A ball with mass 750 g is dropped from a height of 1.25 m. After hitting the floor it bounces back to a height of 0.800 m. What is the magnitude and direction of the impulse from the floor that makes the ball bounce?
A neon sign in a shop operates at around 12 kV (rms). A transformer is to step-up the 120 V (rms) line voltage to that value. How many turns must be placed into the primary coil
A long cylindrical conductor is placed in an initially (i.e., before the cylinder is present)uniform electric field which is perpendicular to the axis of the cylinder. Find the electrical potential outside of the cylinder
A 0.11- kg block on a wooden table is given a sharp blow with a hammer. The block then slides across the table to a stop. How far does the block go
Two capacitors, one that has a capacitance of 3.90 µF and one that has a capacitance of 12.3 µF, are connected in parallel. Find the potential difference across each capacitor after they are reconnected
A small metal ball with a charge of 0.45 C and a mass of 34 g (0.034 kg) enters a region where there is a magnetic field of 0.55 T. From Newton's second Law, what is the magnitude of the acceleration of the charged ball
Sweating is one of the main mechanisms with which the body dissipates heat. Sweat evaporates with a latent heat of 2430 kJ/kg at body temperature, what would be the maximum sustainable metabolic rate, in watts, if75% of the energy used by the body ..
An electron beam accelerated through a potential difference of 250V, and passes through a small circular hole, What is the diameter of the hole
A lens is formed from a plastic material that has an index of refraction of 1.55. If the radius of curvature of one surface is 1.25 m, calculate the focal length and the power of the lens.
A molecule of DNA (deoxyribonucleic acid) is 2.08 µm long. The ends of the molecule become singly ionized: negative on one end, Determine the effective spring constant of the molecule
A small ball of mass 50 g is suspended from a string of length 66-cm and whirled in a circle lying in the horizontal plane. If the string makes an angle of 21? with the vertical, find the centripetal force experienced by ball. The acceleration of ..
3.00×104 of 300 C steam at a pressure of 20.0 is cooled until it condenses. What is the volume of the liquid water
The temperatures indoors and outdoors are 299 and 312 K, respectively. How much heat is removed from the house
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