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A popgun uses a spring for which k=20 N/cm. How high can the gun shoot a 5.0 g projectile
Consider three capacitors, of capacitance 2860 pF, 4570 pF, and 0.0011 ?F. what are the maximum and minimum capacitances that you can form from these
Refer to Interactive Solution 25.21 for help with problems like this one. How far from the wall should the mirror be located
The displacement vectors 44.5 cm at 15.0° and 23.0 cm at 51.0° both start from the origin and form two sides of a parallelogram. Find the area of the parallelogram
Two skaters, one with mass 65 kg and the other with mass 80 kg, stand on an ice rink holding a pole of length 9 m and negligible mass. How far does the 80 kg skater move
A woman in a movie fires a gun and is pushed backwards. The mass of the bullet is 0.050 kg and the bullet velocity is +850 m/s. What is the recoil velocity of the woman
A hydrogen atom is initially at n =3 state. find How much energy is required to ionize this atom
An object is placed 50 cm in front of a convex mirror and its image is found to be 20 cm behind the mirror. What is the lateral magnification
The filament of a light bulb has a temperature of 2.97 x 103 °C and radiates 60.0 W of power. Find the surface area of the filament
Two cylindrical rods have the same mass. One is made of silver (density = 10 500 kg/m3), What is the ratio (silver-to-iron) of the lengths
The concrete wall of a building is 0.136 m thick. The temperature inside the building is 22.3 °C, while the temperature outside is 0.0 °C. What is the emissivity of the wall
A transformer is to be used to provide power for a computer disk drive that needs 6.6 V (rms) instead of the 120 V (rms) from the wall outlet. Find the number of turns in the secondary
An object is located 15 cm in front of (to the left of) a converging lens with a focal length of 10 cm. To the right of the converging lens, compute the location of the final image
An object is 100 cm in front of a concave mirror that has a radius of 80 cm. Calculate the image distance and lateral magnification
You are standing in air and are looking at a flat piece of glass (n = 1.52) on which there is a layer of transparent plastic, Find the smallest possible nonzero value for the thickness of the layer
One member of a pair of parallel conducting plates has potential 17 V. An electron is ejected from that plate at potential, What is the potential of the second plate
A 0.250-kg piece of aluminum that has a temperature of -173 °C is added to 1.0 kg of water that has a temperature of 1.4 °C. determine the mass of water that has been frozen into ice
A snow maker at a resort pumps 260 kg of lake water per minute and sprays it into the air above a ski run. how much heat does the snow-making process release each minute
The heating element of a water heater in an apartment building has a maximum power output of 23 kW. what is the maximum possible temperature of the hot water
The intensity level of 34.07 harmonicas in a harmonica band is 78.31 dB. Compute the intensity level generated by one harmonica
A piece of glass has a temperature of 73.0 °C. Liquid that has a temperature of 37.0 °C is poured over the glass, determine the specific heat capacity of the liquid
A spherical brass shell has an interior volume of 1.51 x 10-3 m3. Within this interior volume is a solid steel ball that have a volume of 0.53 x 10-3 m3. What is the volume of mercury that spills ou
A steel ruler is calibrated to read true at 21.4 °C. A draftsman uses the ruler at 37.6 °C to draw a line on a 37.6 °C copper plate. To what temperature should the plate be cooled
What is the frequency heard by a person driving 62.41 km/h toward a blowing factory whistle (f = 425.84 Hz) is the air temperature is 20.03 oC
The rope wrapped around the outer diameter of the disk is pulled at a constant speed of 1.06 m/s. find how fast does the hanging mass rise