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The beam is 4.60 m long and has a mass of 260 kg (excluding the mass of the two supports). Each support is 0.530 m from its end of the beam. In unit-vector notation, what are the forces on the beam
Explain, using either time-dilation or length contraction arguments. If they want to make the trip in 22 y what distance would the person travelling at nearly the speed of light measure (in light ye
You are out on your friend's boat in Mission Bay soaking up rays and fishing for tuna. You have a big fat worm on the end of your fishing line. You are holding your fishing rod so the worm is comple
A particle has a rest mass of 6.64×10^-27 kg and a momentum of 2.10×10^-18 kg m/s. (a) What is the total energy (kinetic plus rest energy) of the particle?
As 771.0 kg copper bar is put into a smelter for melting. The initial temperature of the copper is 300.0 K. How much heat must the smelter produce to completely melt the copper bar? (The specific he
A cylinder fitted with a movable piston contains ideal gas at 27°C, pressure 0.50 x 105 Pa and volume 1.25 m3. What will be the final temperature if the gas is compressed to 0.80 m3 and the pressu
The coefficients of linear expansion of aluminum and steel are 2.4 x 10-5 K-1, and 1.2 × 10-5 K-1, respectively. The temperature is raised to 90°C. The increase in the length of the joined r
A sealed 29 m3 tank is filled with 9000 moles of ideal oxygen gas (diatomic) at an initial temperature of 270 K. The gas is heated to a final temperature of 330 K. The atomic mass of oxygen is 16.0
As mass is added to the mass holder an elogation or stretching of the string itself may occur. How does this affect the results of the experiment?
A Carnot engine operates between a high temperature reservoir at 435 K and a river with water at 280 K. If it absorbs 3700 J of heat each cycle, how much work per cycle does it perform?
How much power is radiated from each panel? Assume that the panels are in the shade so that the absorbed radiation will be negligible.
The mases of the three dice are 12.5 g, 14.3 g, and 18.9 g, and their respective coordinates after one particular throw are (0.117 m, -0.399 m), (-0.285 m, 0.461 m), and (-0.413 m, -0.343 m). What a
A block of mass 0.222 kg is placed on the end of a spring which has a stiffness of 150. N/m. It is pulled down 2.60 cm and released. What is the frequency of oscillation?
The magnetic field is 0.08 Tesla and is going into the page. Determine the magnetic force (magnitude and direction) that acts on the particle. Will the particle experience any acceleration due to th
A converging lens has a focal length of f = 27 cm. An object is placed 37 cm from the lens. Find the size of the image in cm if the object has a height of 7 cm. Express the answer with one decimal p
A person reading a european newspaper finds that the low temperature the night before in stockholm was -16 degree Celcius. What is the equivalent temperature in degrees Farenheit?
An unstable particle is created in the upper atmosphere from a cosmic ray and travels straight down toward the surface of the Earth with a speed of 0.99540c relative to the Earth. A scientist at res
A 500 g steel rod 30 cm in length is pivoted about its center and rotated at 300 rpm. A) What is the angular momentum?
What distance, as measured in the laboratory, does the pion travel during its average lifetime?
A 1120 kg car experiences an impulse of 30,000.0 N · s during a collision with a wall. If the collision takes 0.43 s, what was the velocity of the car just before the collision?
A 10 lb sphere 6 inches in diameter and a 10lb hoop 12 inches in diameter roll down a 30 degree slope, find the angular acceleration and the acceleration of the mass center for the 2, Find the angul
You're an engineer designing kitchen appliances, and you're working on a two-speed food blender, with 3700 rpm and 2200 rpm setting. Specs call for the blender to make no more than 60 revolutions wh
What does she calculate for the minimum thickness of the film? Equation is 2(t)=(m+1/2)(lamda/n)
A 28.5 g bullet strikes a 0.520 kg block attached to a fixed horizontal spring whose spring stiffness constant is 7730N/m . The block is set into vibration with an amplitude of 35.0 cm. What was th
A 1200 kg cannon fires a 100.0 kg cannonball at 35 m/s. What is the recoil velocity of the cannon? Assume that frictional forces are negligible and the cannon is fired horizontally.