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A hydrogen atom initially in the ground state absorbs a photon, which excites it to the = 4.00 state
Determine the wavelength of the photon.
Determine the frequency of the photon.
A pair of eyeglasses has an index of refraction nglass = 1.52. It is covered with an antireflection layer that has a thickness of 120 nm, what is its index of refraction
What is the magnitude of the vertical component of its velocity as it strikes the ground.
What is the magnetic field at the center of a circular loop of wire of radius 4.0cm when a current of 10a flows in the wire
Consider a spring of stiffness k and mass m. If we stretch - simultaneously - both ends of the spring by force F1 and F2. What will be the elongation of the spring
An athlete on a trampoline leaps straight up into the air with an initial speed of 5.1 m/s, find the speed of the athlete when she is halfway up to her maximum height
A charged particle moving with speed, v, enters a region containing a uniform magnetic field, Starting from Newton's second law, derive the formula for the radius of the particle's orbit in terms of its mass, m, speed, v, and the magnetic field, B
A football coach in hopes of improving his kicker's performance fills a .9 kg football with helium rather than air. what change in relative weight of the football (change in weight divided by weight) is to be expected
As part of a class project you are given 0.900 g of nichrome and asked to fabricate a wire with uniform cross-section. What length of wire do you end up with
A 50,000 kg locomotive is traveling at 60.0 m/s when its engine and brakes both fail. How far will the locomotive roll before it comes to a stop
Suppose a pion is traveling in the positive x-direction, and the magnetic field is in the positive z direction. Was the pion positively or negatively charged
A technician wraps wire around a tube of length 37 cm having a diameter of 8.3 cm. If the current in this solenoid increases at the rate of 2 A/s, what is the self-induced emf in the solenoid
Suppose that you find the volume of all the oceans to be 1.4\times10^9\; \rm km^3 in a reference book. What is this volume in cubic meters
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