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A 4.58 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=11.40 N at an angle theta=30.0 degrees above the horizontal. What is the speed of the block 5.50 seconds after it starts moving?
A high-speed drill reaches 2300rpm in 0.51s. What is the drill's angular acceleration
A charge of 0.43 C is spread uniformly throughout a 36 cm rod of radius 7 mm. What are the volume and linear charge densities
q1. a cannonball launched with an initial velocity of 161 ms at the angle of 45 degrees follows a parabolic path and
An air bubble has a volume of 1.49 cm3 when it is released by a submarine 110 m below the surface of a lake. What is the volume of the bubble when it reaches the surface
Three moles of an ideal monatomic gas expands at a constant pressure of 2.90atm ; the volume of the gas changes from 3.00×10?2m3 to 4.40×10?2m3. Calculate the amount of work the gas does in expanding
An immersion heater has a resistance of 5.0 ohms while drawing a current of 3.0 amperes. How much electrical energy is delivered to the heater duing 200 seconds of operaion
The pressure inside a gas bottle at 25.5 °C is 3630 kPa. What will be the pressure inside the bottle
suppose that 1.00g of ydrogen is seperated into electrons andprotons. supoose also that the protons are placed at theEarth's North Pole, What is the resulting compressional force on the Earth
A microwave radio transmitter emits electromagnetic waves of a single wavelength. What is the power of the transmitter
neutron stars consist only of neutrons and have unbelievably high densities. a typical mass and radius for a neutron
Zinc has a work function of 4.30eV. What is the longest wavelength of light that will release an electron from a zinc surface, What is the maximum possible speed of the electron
A roller coaster car rolls down a frictionless track, reaching speed v_0 at the bottom. by what factor must you increase the height of the track
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