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You drop a 1.5 kg textbook to a friend who stands on the ground 10 m below the textbook with outstretched hands 1.50 m above the ground. What is the speed of the textbook when it reaches the hands? m
As a soap bubble (n = 1.33) evaporates and thins, thereflected colors gradually disappear. What is the last color seen
A silicon solar cell looks like a battery with a 0.33Vterminal voltage. What is the solar cell's efficiency-that is, what percentage of the energy incident on the cell is converted to electric energy
The 20-cm-long wrench in the figure swings on its hook with a period of 0.80s, What is the moment of inertia about the hook
An object with mass 3.0kg is executing simple harmonic motion, attached to a spring with spring constant 320N/m, Calculate the maximum speed attained by the object
The beam emerging from a ruby laser (wavelength 694.3 nm) passes through a circular aperture 6.2 mm in diameter. what is the angular spread of the beam
7.84 g of argon gas at an initial pressure of 4.34 atm and at 16°C undergo an isobaric expansion until the volume has increased in five times. What is the volume of the gas after expansion
At point A , 5.0m from a small source of sound that is emitting uniformly in all directions, the intensity level is 56.0 dB, obtain the intensity of the sound
Ten days after it was launched toward Mars in December 1998, find the potential energy of the earth-spacecraft system
A proton is accelerated from rest through a potential difference of 350MV, What's the ratio of kinetic to rest energy
A diver makes 2.5 revolutions on the way from a 11-m-high platform to the water. find the diver's average angular velocity during a dive
Find the peak magnetic field in an electromagnetic wave whose peak electric field is 200N/C
Light travels at about 0.75c in water. What's the wavelength in water of light whose wavelength in vacuum is 664nm
The distance between 2 slits (d=0.155 mm) and a screen is 1.54 m. If the spacing between the 2nd order bright fringe and the 3rd order dark fringe is 3.50 mm obtain the wavelength of the light
An arrow is placed 28.7 cm in front of a convex lens (f=15.0 cm). The convex lens is followed by a concave lens (f= 21.5 cm) 12.8 cm fro the convex lens. obtain the magnification of the image
A 60.0 g copper calorimeter cup contains 200.0 g of water at 22.0 Co. How much steam must be condensed into the water
Antennas for radio transmission and reception are particularly effective if they're about a half-wavelength long. What's the appropriate length for an FM antenna
A 1-m-tall barrel is closed on top except for a thin pipe extending 4.2m up from the top. What is the pressure on the bottom when water is added to fill the pipe to its top
The temperature inside a house is 25 degree C while the temperature outside is 10 degree C. Approximately how much energy is radiated per second
An initially uncharged 4.53x10-6 F capacitor and a 7250 ohm resistor are connected in series, Calculate the circuit's time constant
What is the free-fall acceleration at the surface of the moon and What is the free-fall acceleration at the surface of the Jupiter
Find the object distances (in terms of f) for a thin converging lens of focal length f if, calculate the magnification of the lens for cases (a) and (b)
What is the gravitational force of the moon on the earth and What is the gravitational force of the sun on the earth
An RLC series circuit has R = 935? , L = 18.0mH , and C = 250?F. If the circuit is connected to a 110V rms power source at the resonance frequency, what's the average power consumption
An RL series circuit has R = 80.0? and L = 1.95mH . The series combination is connected across a 165V (rms), 63Hz power supply. Find the peak current