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a) Find the resolving power of a grating needed to separate the sodium-D spectral lines, which are at 588.5 nm and 589.2 nm.
b) How many lines should the grating have to achieve this resolution in first order? (This is a very lower solution in terms of present-day spectroscopic standards)
A 53 kg springboard diver leaps from a 2m high board by bouncing until she has increased the energy in the board to 1040 joules. What is the maximum height above the water of the diver during her dive
a ball moving with speed v collides with a horizontal smooth surface at an angle ? with normal to surface. if
an immersion heater used to boil water for a single cup of tea plugs into a 120 v outlet and is rated at 350 w .a what
A 18 kg dog is standing on the edge of a stationary, frictionless turn table of rotational inertia95 kg·m2 and radius 2.19 m. The dog walks once around the turntable. What fraction of a full circle does the dog's motion make with respect to the gro..
A 25 kg child at a playground runs with an initial speed of 2.5 m/s along a path tanget to the rim of a merry-go-round with a radius of 2.0 m and jumps on. Find the angular velocity of the child and merry-go-round
The drawing shows a person (weight W = 598 N, L1 = 0.829 m, L2 = 0.409 m) doing push-ups. Find the normal force exerted by the floor on each hand
A 0.004-kg bullet is fired into a 0.200-kg block of wood at rest on a horizontal surface. what is the speed of the bullet before impact
Suppose the coefficient of static friction between the road and the tiers on a car is 0.60 and the car has no negative lift. What speedwill put the car on the verge of sliding as it round a level curveof 30.5 m radius?
A proton with an initial velocity of (1.0x + 2.0y+ 3.0z) xe5 m/s enters an magnetic field of 0.5zT. Find the radius of the resulting helix
An atom (not a hydrogen atom) absorbs a photon whose connected wavelength is λ1 and immediately emits a photon whose associated wavelength is λ2(with λ1
When an AC source is connected across a 11.5-? resistor, the rms current in the resistor is 8.20 A.
A hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. When the sphere comes to rest, what fraction of its volume will be submerged
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