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A metal rod of length 48 cm falls toward the earth. The rod is horizontal and oriented east-west. At a moment when the rod's speed is 8m/s, approximately how many excess electrons are at the negative end of the rod?
Note: The Earth's magnetic field is 2e-5 T in this question.
A 0.43 Tesla magnetic field is perpendicular to a circular loop of wire with 52 turns, what is the magnitude of the induced emf in Volts
The specific heat of mercury is 138 J/kg Co Determine the latent heat of fusion of mercury using the following calorimeter data: 1 kg of solid Hg at its melting point of -39.0º C is placed in a 0.620 kg aluminium calorimeter with 0.40 kg of water ..
The potential difference across a resting neuron is about 80 mV and carries a current of about 0.10 mA. How much power does the neuron release
A stunt man drives a car at a speed of 20m/s off a 30-m-high cliff, How far from the base of the cliff does the car land and What is the car's impact speed
youre investigating a subway accident in which a train derailed while rounding an unbanked curve of radius 132 m and
A block with a mass of m is resting on a 20 degree slope. The block has coefficients of friction 0.81 and 0.55 with the surface. What is the minimum mass that will stick and not slip
The two spheres are then connected by a thin conducting wire, What is the charge on the first sphere after the two spheres are connected by the wire
Coulomb’s law for electrostatic force between two point charges and Newton’s law for gravitational force between two stationary point masses, both have inverse-square dependence on the distance between the charges/masses.
Two isotopes of carbon, carbon-12 and carbon-13, have masses of 19.93 × 10-27 kg and 21.59 × 10-27 kg, respectively. Determine the spatial separation between the two isotopes
It takes a runner 3 h, 9 min, 4 s to run a marathon. If the distance of a marathon is 42.2 km, what is the average speed of the runner
A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 N on him. What force does the winning player exert on the ground to move forward if his mass plus equipment is 110 kg
A typical Major League fastball is thrown at about 99 mph and with a spin rate of 103 rpm. If the distance between the pitcher's point of release and the catcher's glove is exactly 65.5 ft, how many full turns does the ball make between release and c..
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