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Suppose 6.13 g of oxygen (02) is heated at constant atmospheric pressure from 18.5 oC to 133 oC.
(a) How many moles of oxygen are present? (Take the molar mass of oxygen to be 32.0 g/mol)
(b) How much energy is transferred to the oxygen as heat? (The molecules rotate but do not oscillate.)
(c) What fraction of the heat is used to raise the internal energy of the oxygen?
The drawing shows four insulated wires overlapping one another, forming a square with 0.050-m sides, Calculate the current I.
While admiring a tree, you notice that the leaves form a more or less continuous spherical shell, with relatively few leaves growing in the shell interior. You estimate that the diameter of this shell is about 30 m. Every leaf is about 5 in. long and..
An air parcel occupied by an ideal gas (T1 = 255 K, V1 = 1500m3, m1 = 1680 kg) collides and mixes with a second air parcel occupied by a second ideal gas (T2 = 280 K, V2 = 1200 m3, m2 = 1392 kg). Assuming the specific heat capacities of the gases in ..
an aluminum wire carrying a current of 4a has a cross-sectional area of 9e-06 m2. find the drift speed of the electrons
An electron and a positron are moving toward each other and each has speed 0.560c in the lab frame. What is the wavelength of each photon? What is the kinetic energy of each particle?
To estimate the muzzle speed of a blow dart, fire dart straight up into the air and time how long it takes to come back down. Roughly half of that time is the time for object to decelerate from its initial velocity to motionless. Estimation the in..
Person weighs 985 N on a bridge of 3610 N stops a fifth of the way, there are two cinder blocks holding up the bridge, what is the force one exerts on the bridge at the near end and far end of the bridge?
During 0.12 s, a wheel rotates through an angle of 2.34 rad as a point on the periphery of the wheel moves with a constant speed of 2.29 m/s
A 1,500kg satellite is placed in an orbit 8,000km above the surface of the Earth. a. What is the gravitational acceleration of the Earth at that altitude? b. What is the speed of the satellite? c. How long does it take the satellite to go around the ..
A student makes a saturated solution of KCL and 100 g of water at 20 degrees Celsius. If the student leaves the solution and all of the water evaporates, how many grams of KCL will be left in the container?
An optical engineer needs to ensure that the bright fringes from a double slit are 15.7 mm apart on a detector that is 1.61 m from the slits. how far apart should the slits be
A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6 kg and the sign has a mass of ms = 16.3 kg. What is the tension in the wire
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