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The two stars in a binary star system have masses 2.3x1030kg and 5.5x1030kg. They are separated by 1.5x1012m. What is the speed of the lightest star
A relaxed crystalline lens has a refractive index n=1.42 and radii of curvature R1=+10.0mm, Calculate the focal length and optical power of the lens
A copper block is removed from a 306?C oven and dropped into 1.00kg of water at 20.1?C. What is the mass of the copper block
A coil of 150 turns of wire is in the form of a circle, carries a current of 63 mA, and sits in the center of a dipole magnet, What is the radius of the coils
A flat conductor of thickness 0.500 mm is placed in a magnetic field of 0.200 T perpendicular to the flat surface. what is the Hall voltage generated when 3.40 A flows along the conductor
A 0.24 kg blob of clay is thrown at a wall with an initial velocity of 23 m/s. what is the average force experienced by the clay
An organ pipe is open at both ends. It is producing sound at its fifth harmonic, What is the length of the pipe
A 1100kg automobile travels at 80km/h. What net work would be required to bring it to a stop
A photon of wavelength 0.45000nm strikes a free electron that is initially at rest, What is the speed of the recoil electron after the collision
A sample is bombarded by incident X-rays, and free electrons in the sample scatter some of the X-rays at an angle of -0= 122.0 degrees, Determine the wavelength (in nm) of the incident X-rays
A light source emits a beam of photons, each of which has a momentum of 2.3 ?? 10??29 kg??m/s. What is the frequency of the photons
A 28.4kg beam is attached to a wall with a hinge and its far end is supported by a cable. what is the horizontal component of the force exerted by the hinge on the beam
A 620g object traveling at 2.1m/s collides head-on with a 320g object traveling in the opposite direction at 3.8m/s. what is the change in the kinetic energy of the 620g object
A beam of particles is directed at a 0.0178 kg tumor. There are 1.56×1010 particles per second reaching the tumor, Calculate the biologically equivalent dose (in rem) given to the tumor in 26.8
lightbulbs in AC circuits "flicker" in intensity, though the flicking is too fast for your eyes to sense it. how many times a second does the bulb reach peak brightness
If this same monchromatic light where to strike the grating when it is immersed in carbon disulfide with a refractive index of 1.63, at what angle would the first order diffraction appear
Emilie's potter's wheel rotates with a constant 2.20rad/s2 angular acceleration. What was the angular velocity of the wheel at the beginning of the 3.30s interval
A copper rod and an aluminum rod of equal diameter are joined end to end in good thermal contact. what must be the length of the aluminum rod so that the temperature at the junction is 50°C
When a guitar string is sounded along with a 440 Hz tuning fork, a beat frequency of 4 Hz is heard. compute the frequency of the string
Two vehicles are approaching an intersection. One is a 2300kg pickup traveling at 14.0m/s from east to west (the ?x- direction), What is the magnitude of the net momentum
An alpha particle is moving at a speed of 5.0 × 105 m/s in a direction perpendicular to a uniform magnetic field of strength 0.040 T. What is the radius of the path of the alpha particle
Two particles are fixed along a straight line, separated by a distance 4.2 cm. The left one has a charge +3.0 nC and the right one has a charge of +7.0 nC. What is the location of the point
A microscope is used to examine a sample of bacteria that are spread on glass. determine the shortest distance between two bacteria
If 100,000 MHz radar waves are incident on a plane coated with a polymer whose index of refraction is n = 1.50, how thick would you make the coating
Let the angle of incidence be 70° and the transmitted region be diamond with n2 = 2.42