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A certain substance has a mass per mole of 48.0 g/mol. When 341 J is added as heat to a 30.0 g sample, the sample's temperature rises from 23.0°C to 48.0°C. What are the
(a) specific heat and
(b) molar specific heat of this substance?
(c) How many moles are present?
A rocket-powered hockey puck has a thrust of 1.5 Newton and a total mass of 1.0 kilogram. Compute how far does the puck land from the base of the table
what is the height of the arrow
How much force, in Newtons, is needed to accelerate a truck with a mass of 1500 kilograms from a full stop to 40 m/s in 10 seconds if the rate of acceleration is constant.
A 3000 kg lunar lander is in orbit 50 km above the surface of the moon. how much work must the thrusters do
Cloverleaf exits are approximately circular. A 1700 kg automobile is traveling 53 mph while taking a cloverleaf exit that has a radius of 47.8 m. Calculate the centripetal acceleration of the car and the centripetal force on the car. Remember that..
A stone was thrown upward with an initial speed of 10m/s from theroof of a building and strikes the ground in 6s (no air resistance) How tall is the building? How high does the ball go in respect to the roof?
On Planet X, an astronaut has maximum walking speed of 1.9 m/s. The astronaut's legs are each 1.3 m long. What is the constant of acceleration due to gravity on Planet X?
The x-component of the electric field
what time delay Delta t is necessary. A boxcar of mass 600 tons at rest becomes uncoupled on a 5.00 grade. If the track is considered to be frictionless, what speed does the boxcar have after 15 seconds.
If the beam refracts at an angle of 23.5o from the normal, at what angle to the normal did it enter the second medium?
The ground state for a single valence electron of a rubidium atom (Z=37) is 5s and its energy is –4.18 eV. The valence electron is excited into the 5g state. We want to determine the energy of this 5g electron. Assume that the wave function for th..
A resistor with resistance 14M? is connected in series with a capacitor with capacitance 1.0?F and a battery with emf 13.5.0V. what is the time constant
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