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A 15 g bullet is fired into the bob of a ballistic pendulum of mass 1.8 kg. When the bob is at its maximum height, the strings make an angle of 60° with the vertical. The length of the pendulum is 2.3 m. Find the speed of the bullet.
The concrete wall of a building is 0.08 m thick. The temperature inside the building is 17.5°C, while the temperature outside is 0.0°C. What is the emissivity of the wall
Thermal expansion increases the length of a clock's pendulum by a fractional increase of 4.1×10^-5, Under these conditions, how much error in timekeeping accumulates over 1 day
A string with a mass per length of 2.00 gm/m is stretched with a force of 120 N between two points that are 0.40 m apart. What is the length of the organ pipe
A block of mass 250.0 g is at rest on a plane inclined at 30.0 degrees to the horizontal. Find the speed of the second block when it has fallen 35.0 cm
The electric potential at the center of a square is 3 V when a charge of +Q is located at one of the square's corners. What is the electric potential at the square's center when identical charges of -Q are placed at the other three corners of the ..
a 494-turn solenoid has a radius of 7.95 mm and an overall length of 12.4 cm.a what is its inductance?b if the solenoid
A 0.400-kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 23.0 N/m. How far does the putty-block system compress the spring
the initial pressure of a steam turbine inlet is determined by adding the last two digits of your student id to 100
One mole of a ideal gas initially at temp To=0C undergoes an expansion at a constant pressure of 1atm to four times it original volume
The outstretched hands and arms of a figure skater preparing for a spin can be considered a slender rod pivoting about an axis through its center. (See the figure below (Figure 1) .) When the skater's hands and arms are brought in and wrapped arou..
if you look at yourself in shiny christmas tree ball with a diameter of 9.0 cm when you face is 30.0cm away from it
What is the current in the circuit when all six lamps and the heater are turned on? If the circuit has a fuse which will melt if the current exceeds 12 A, will fuse melt.
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