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Consider a refracting telescope. If it has an objective lens with fobj = 1.8 m and an eyepiece with feyepiece = 2.9 cm, what is the angular magnification of the telescope?
An air puck of mass 0.273 kg is tied to a string and allowed to revolve in a circle of radius 0.85 m on a horizontal, frictionless table. The other end of the string passes through a hole in the cen
High-speed stroboscopic photographs show that the head of a 270 g golf club is traveling at 55 m/s just before it strikes a 46 g golf ball at rest on a tee. After the collision, the club head travel
What is the variation of pressure in the sound wave if the speed of sound is 343 m/s and the density of air is 1.2 kg/m3?
We observe two charges separated by a distance of 1.00 meters. If the distance between the two charges is changed to be half what it was, by what factor would the electric force of between them be c
A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100. What is the minimum force the nurse needs to apply to the syringe? The nurse empties the syringe in 2.70 s
A 40 cm diameter wheel accelerates uniformly from 240 rpm to 360 rpm in 6.5 s. how far will a point on the edge of the wheel have traveled in this time?
What are the forces on two charges of +0.43 C and +2.0 C, respectively, if they are separated by a distance of 1.6 m
When at rest, a proton experiences a net electromagnetic force of magnitude 8.5×10-13 pointing in the positive direction. Find the magnitude of the magnetic field.
In the lungs there are tiny sacs of air, which are called alveoli. An oxygen molecule (mass = 5.30 x 10-26 kg) is trapped within a sac, and the uncertainty in its position is 0.140 mm. What is the
Gas is confined in a tank at a pressure of 1.04×108 Pa and a temperature of 23.3?C. Half of the gas is withdrawn and the temperature is raised to 67.6?C. Find the new pressure in the tank.
A uniform plank of length 5.5 m and weight 205 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who we
If it requires 3.0 {rm J} of work to stretch a particular spring by 1.7 {rm cm} from its equilibrium length, how much more work will be required to stretch it an additional 4.1 {rm cm}?
If the particle mass is m = 0.01 kg, and it moves starting from rest, what is its speed when it passes the point (x, y) = (20 cm, 50 cm)?
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 443 Hz when the train is approaching him and 441 Hz when the trai
Suppose 1800 J of heat is added to 3.6 mol of argon gas at a constant pressure of 120 kPa. Treat argon as a monatomic ideal gas.
Determine the work done on the object by this force as it moves in a straight line from the origin to {vec r} = (12.0{hat i} + 20.0{hat j}){rm m}.
What is the maximum amount by which the wavelength of an incident photon could change when it undergoes Compton scattering from an atom or molecule with a 60.0 u mass? (1 u = 1.66 x 10-27 kg).
A bungee jumper undergoes simple harmonic motion with amplitude 7.6 and frequency 0.140 . Assume the bungee jumper follows the simple harmonic motion equation.
A jogger jogs around a circular track with a diameter of 325 m in 16 minutes. What was the jogger's average speed in m/s?
In a Compton scattering experiment, the incident X-rays have a wavelength of 0.2682 nm, and the scattered X-rays have a wavelength of 0.2706 nm. Through what angle in the drawing are the X-rays sca
a cord tied to a pail of water, and the pail is swung in a vertical cirlce of radius 0.600 m. What must be the speed of the pail at the highest point of the circle if no water is to spill from it?
An X-ray photon is scattered at an angle of = 180.0° from an electron that is initially at rest. After scattering, the electron has a speed of 5.40 x 106 m/s. Find the wavelength of the inciden
A copper wire of cross-sectional area 2.40 × 10-6 m2 and length 3.40 m has a current of 2.00 A uniformly distributed across that area.