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A bat at flying east at 30 m/s sends out ultrasonic waves at 60kHz and receives them returned from an object moving east at 35.0 m/s, What is the sound frequency of the reflected wave as heard by bat
A 30-dB sound wave and a 20dB sound wave simultaneously strike a sound detector with an area of 5*10-1 cm2. Find energy absorbed by the detector in 3 hours
A narrow glass tube, open at one end, closed at the other, is 40cm long. find the wavelength of the resonant wave
A hydrogen atom in the ground state absorbs a 13.06eV photon. find the wavelength of the photon emitted in this quantum jump
An oil droplet with 13.0 excess electrons is observed between two parallel electrodes spaced 11.0mm apart. What is the radius of the droplet
A proton orbits a long charged wire, making 1.60 x 10^6 revolutions per second. The radius of the orbit is 1.40cm. What is the wire's linear charge density
An aluminum-alloy rod has a length of 10.007 cm at 16.600 °C and a length of 10.023 cm at the boiling point of water. find the length of the rod at the freezing point of water
A 150g ball is thrown vertically upward from a window 10m above the ground at speed of 30 m/s What is the speed of the ball when it strikes the ground
A small conductive rod of length 1.4 m moves with a constant velocity v=11 m/s in a direction parallel to a long wire carrying a current of 34 A. Calculate the electric potential induced across the
A .005 kg block having a velocity of 500 m/s hits a 5 kg wooden block at rest on a horizontal at an angle of 30 degrees from the horizontal
an ideal gas expands isothermally,perfoming 5.57x10^3 j of work in the process. calculate the heat absorbed during this expansion
A 224Ra atom (Z=88, Atomic mass = 224.020186 amu) consists of protons (Mass = 1.00728 amu), Calculate the binding energy per nucleon
In a double-slit interference experiment, the wavelength is 477 nm, What is the linear distance between adjacent maxima on the screen
Calculate the energy of the electron in the ground state of triple ionized beryllium, which has an atomic number Z = 4
A farsighted person has a near point that is 48.0 cm from her eyes. Find the focal length of the eyeglasses
Compressed air can be pumped underground into huge caverns as a form of energy storage. The volume of a cavern is 4.9 Ã- 105 m3, how many homes could this internal energy serve
a satellite that weighs 4900N on the launchpad travels around the earths equator in a circular orbit with a period of 1.667h. determine the altitude of the satellite above the earths surface
A parallel plate capacitor constructed of two disks spaced 2.0 mm apart and is charged to a potential difference of 500V. What is the farthest distance from the negative plate
Veronica''s family ordered 2 pizzas that cost $13.75 each and 2 pitchers of soda that cost $3.95 each. The total cost included a sales tax of 5.5%. They left 20% of the total cost for a tip. How mu
If a container has a water level 20 cm above the base and you punch a hole in the side 12 cm high
If a 12 V battery is used to charge this capacitor, what is the total charge stored what is the magnitude of the electric field between the plates what is the energy stored on the capacitor
A very hot piece of iron with mass 1.5kg and initial temperature 755 degrees celcius is placed into a tank of water with total water mass 3.0kg, what is the final equilibrium temperature for the iro
Two, concentric, thin spherical shells of radii R1 = 40.8 cm and R2 = 51.0 cm are uniformly charged with a total charge Q1 = â€"50.5 μC, What is the potential of the outer sh
Two ideal gases have the same mass density and the same absolute pressure. One of the gases is helium (He), What is the temperature of the neon
An ideal gas has a pressure of 2.0 atm and temperature 27 degrees celcius. what is the volume of this gas