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1. A 0.372- kg coffee mug rests on a table top 0.74 m above the floor. What is the potential energy of the mug by respect to the floor?
2. What is its potential energy with respect to a counter top 1.1 m above the floor?
A speed skater moving across frictionless ice at 8.4 m/ s hits a 5.2 m -wide patch of rough ice. She slows steadily, after that continues on at 6.3 m/s.
how much work is required to stop an electron m 9.11 multiplied by 10-31 kg which is moving with a speed of 1.72
a point charge moving in a magnetic field of 1.24 tesla experiences a force of 0.813e-11 n. the velocity of the charge
A 52.6-kg skater is standing at rest in front of a wall. By pushing against the wall she propels herself backward with a velocity of -2.29 m/s. Her hands are in contact with the wall for 1.26 s. Ignore friction and wind resistance.
It shouldn't matter how many calories were consumed or how long the person walked or ran, we are just making a comparison of burning calories while exercising at 5km/h and 15km/h.
the data represents the resistance R of a thermistor in Ohms as a function of tempeature T in kelvin make a graph of the natural logarithm of the resistance ln(R) versus the inverse of the temperature, 1/T and determine the constants Ro and B in R..
A convex lens with f1= 19.9 is mounted 40.0cm to the left of a concave lens. When an object is placed 30.8cm to the left of the convex lens, What is the focal length of the concave lens
A copper wire of length L and cross sectional area A is connected to a 12.0 volt DC power supply. The current through the wire is measured at 36A. What is the current through both wires
The rotor in a certain electric motor is a flat, rectangular coil with 87 turns of wire and dimensions 2.33 cm by 3.88 cm. Find the maximum torque acting on the rotor
An electron in the hydrogen atom jumps from a level in which the energy is 1.89 eV higher than the energy of the final lower-energy level. What is the frequency of the light emitted in this transition
An elementary particle called a pi meson (or pion for short) has an average lifetime of 2.6*10^-8 s when at rest. Find how far would the pion have traveled relative to Earth
A battery with an emf of 12.6 V and internal resistance of0.83Ω is connected across a load resistor R. If the current inthe circuit is 0.85 A, what is the value of R? What power is dissipated in the internal resistance of the battery?
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