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Two people are carrying a uniform wooden board that is 3.40m long and weighs 145N .
A) If one person applies an upward force equal to 50.0N at one end, at what point does the other person lift? ( m from the end where the first person lifts)
B) What force does the other person lift? (N)
Calculate the radius of its ground-state orbit, Calculate the energy of the electron in the ground state of double ionized lithium
What would be the time constant in a RC circuit when R = 200 kohms and C = 10mf? 20
You are trying to advance your shooting skills by shooting at a can on top of a fence post. You miss the can, and the bullet, moving at 207 m/s, is embedded 1.54 cm into the post when it comes to a stop. If constant acceleration is assumed, how long ..
Scientist develop a new heat lamp to keep chicks warm in an incubator. It has a conversion efficiency of 6.5% of its input to radiant energy. how much radiant power does it output
A ball on the end of a string is revolved at a uniform rate ina vertical circle of a radius 72.0cm. calculate the tension in the string when the ball isat the top of its path
A very light rigid rod with a length of 0.500 m extends straight out from one end of a meter stick. Determine the period of oscillation
A 420 turn solenoid, 30 cm long, has a diameter of 2.4 cm. A short 20 turn coil is wound tightly around the center of the solenoid. what will be the induced emf magnitude in the short coil
A shop sign weighing 245-N is supported by a uniform 155-N bean. Find out the tension in the guy wire, and the horizontal and vertical forces exerted by the hinge on the bean.
Small telescopes are often advertised as "200 power" or "magnifies 200 times." As someone knowledgeable about astronomical telescopes, how would you progress such advertisements.
You are using a standard microscope with a 0.10NA 4x objective and switch to a 0.65NA 40x objective. What are the acceptance angles for each
A 0.45kg mass is attached to a spring with a force constant of 21N/m and released from rest a distance of 3.6cm from the equilibrium position of the spring, How far is the mass from the equilibrium position
Computes the price per kwh for a 12-volt automobile battery with a 50 amp-hour capacity that sells for $40. If its weight is 45-lb, what is the energy density in watt-hours per lb.
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