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Which is the following will cause the largest change in the momentum of an object? A force of _____ acting for_______.
7..2
3..3
5..5
6..2
What is final speed of the block
An iron boiler of mass 257 kg contains 861 kg of water at 18.9°C. A heater supplies energy at the rate of 46300kJ/hr. How long does it take for the water to reach the boiling point? Specific heat of iron = 450J/(kg·K).
A cylindrical wheel (disk) of mass 10 kg andradius 0.5 meters is released from rest while sitting on aninclined plane of inclination 30o.find its velocity when it reaches the bottom of the plane
A 25 kg box is released from rest on a frictionless ramp making an angle of 42o with the horizontal. Determine the normal force on the box
A bicycle wheel is rotating at 49 when the cyclist begins to pedal harder, giving the wheel a constant angular acceleration of 0.42. How many revolutions does the wheel make during this time
A wheel is rotating at 8 rad/s. Obtain the tangential velocity of a point on the rim of the wheel if the wheel has a radius of 0.50meter? Find the centripetal acceleration of this point
write down the equations expressing conservation of momentum for the components in the x and y directions separately.
Over a certain region of space, the electric potential is V = 4.2x-3.6x^2y+1.5yz^2. On scratch paper, What is the magnitude of the field at the point P
A 23gram bullet traveling 280 m/s penetrates a 4.2 kilogram block of wood and emerges cleanly at 200 m/s. find how fast does it move after the bullet emerges
What are potential threats to internal and external validity for the experimental design and procedure? How will they be addressed and Will a pilot test of the experiment be conducted?
The walls of a blackbody cavity are at a temperature of 15oC. What is the wavelength of the radiation of maximum intensity
A solenoid that is 103 cm long has a cross-sectional area of17.5 cm2. There are 790 turns of wire carrying a currentof 9.15 A. (a) Calculate the energy density of the magnetic field inside the solenoid.
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