Physics

Air enters a nozzle at. 2mpa, 350k and a velocity of 150m/s. Assuming isentropic flow, determine a) the temperature and b) the pressure of the air where the air velocity is equal to the speed of sound. C) what is the ratio of the area at this location to the entrance area?
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The 75. 0 kg hero of a movie is pulled upward with a constant acceleration of 2. 00 m/s2 by a rope. What is the tension on the rope?585N75. 0N885N11. 8N
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If the magnitude of the drift velocity of free electrons in a copper wire is 8. 32 10-4 m/s, what is the electric field in the conductor
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An astronaut weighs 8.00 102 newtons on the surface of Earth. What is the weight of the astronaut 6.37 106 meters above the surface of Earth?
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How can you theoretically explain it? 3. What will happen to acceleration of mass spring system if its mass is doubled? 4. A simple pendulum has time period 'T'. What will happen to its time period if it
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During a new moon the moon is where in relation to the sun and earth?.
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A 2 kg ball is thrown upward with an initial speed of 12 m/s. after rising a vertical distance of 3.0 meters, the ball is moving upwards at only 5 m/s. determine the average force the ball experiences from air resistance during this time.
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How did earth change about 2.5 billion years ago when many organisms began using photosynthesis to make food A. The amount of oxygen in the atmosphere increasedB. Mass extinctions occurredC. The oceans became larger D. Rainfall increased
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Puck A and puck B are free to slide without friction on a horizontal air table; the mass of puck A has been measured to be 165. 0 grams , but the mass of puck B is unknown. The pucks are made of super-ball like material, so any collision between them should be elastic. An experiment is done with puck B at rest at the center of the air table, and with puck A sent at 55. 0 cm/s to make a glancing collision with puck B. After the collision, puck A is measured to have a speed of 29. 0 cm/s , and is observed to have been deflected by 27. 0 degrees from its original direction. What was the y component of puck B's momentum after the collision?
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If the electric potential at point A in the electric field created bya point charge of 3. 3 * 10-11 C is 0. 6 V, what's the distancebetween point A and the point charge? Estimate kas 9. 00 x109Nm2/C2
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A laser beam is aimed through a circular aperture of diameter 1 mm. a. If the laser beam is red with a wavelength of 632. 8 nm, what is the angle from the center of the Airy disk to the first dark ring? (2 points)sin(p) = 632. 8*10^-9 /. 001sin^-1(. 0006328) =. 0363 degreesb. If the screen you are projecting the Airy disk onto is 2 m from the aperture, what is the distance between the center of the disk and the first dark ring? (2 points)Thanks everyone who can help!
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this type of lightning extends up to 95 kilometers above the top of a thunderstorm, and it resembles a jellyfish: this type of lightning extends up to 95 kilometers above the top of a thunderstorm, and it resembles a jellyfish: sheet lightning. sprite. st. elmo's fire. ball lightning.
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1. how much is the increase in temperature from 1880 to 2010?2. what happened to the amount of carbon dioxide from 1880 to 2010?3. what is the relationship between the amount of carbon dioxide and global temperature?4. when was temperature at its highest and at its lowest?please help neep asap....
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the approach to motivation emphasizes the role of species-specific instincts in directing behavior.
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Write a short paragraph describing why you think the outcomes of scientific investigations related to universal laws would be similar regardless of what part of the world they might be conducted
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The molar specific heat of a diatomic gas is measured at constant volume and found to be 29. 1 J/mol K. The types of energy that are contributing to the molar specific heat are(a) translation only(b) translation and rotation only(c) translation and vibration only(d) translation, rotation, and vibration
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1. A person sits beside a highway when a car traveling toward the observer at 35. 0 m/s blows its horn with a frequency of 320 Hz. What frequency of sound does the observer hear when (a) the car is approaching? (b) the car is right next to him? (c) the car is moving away?
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A uniform plank AB of mass 20kg is supported horizontally at 20cm and 70cm marks from A the plank is in equilibrium when massese 50kg and 70kg are suspended at A and B respectively and the weight of 100N is suspended at the 40cm Mark from B
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Pls help 20 pointsIf you push the head of a nail against your skin and then push the point of the same nail against your skin with the same force, the point of the nail may pierce your skin while the head of the nail will not. Considering that the forces are the same, what causes the difference?
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Big fish swim substantially faster than small fish, while big birds fly faster than small ones. However, the speeds of runners vary a lot less with body size, although big ones do go somewhat faster, never mind a lot of highly unreliable top speed data. Some general scaling rules might help. Assume that the cost of transport (cost per distance) varies with body mass^0. 68, that the maximum metabolic rate varies with body mass^0. 81, and that efficiencies and so forth don't vary with body size. How many times faster should a 450 kilogram bear be able to run than the top speed of a 45gram rodent
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The blades in a blender rotate at a rate of 7000rpm . when the motor is turned off duringoperation, the blades slow to rest in 2.7 s.
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Two large speakers broadcast the sound of a band tuning up before anoutdoor concert. While the band plays an A whose wavelength is 0. 773 m,Brenda walks to the refreshment stand along a line parallel to the speakers. Ifthe speakers are separated by 12. 0 m and Brenda is 24. 0 m away, how farmust she walk between the "loudspots"?
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What definition describes cognitive behavior therapy? A. passive concentration on various bodily sensations B. thought correction to reduce stress C. progressive muscle relaxation, working progressively downwards D. inhaling through the nostrils and exhaling through the mouth
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2. A woman lifts up a laundry basket 1. 5m and carries it 20m across the room. This takes 15s. Work is done on the laundry basket_*(20 Points)in walking across the roomduring the entire 15swork is not donein lifting the basket
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