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StressedStudent
Questions and answers by visitors named
StressedStudent
Questions (51)
A roof tile falls from rest from the top of a building. An observer inside the building notices that it takes 0.10 s for the
4 answers
1,147 views
A model rocket blasts off from the ground, rising straight upward with a constant acceleration that has a magnitude of 76.0 m/s2
4 answers
579 views
Two rockets are flying in the same direction and are side by side at the instant their retrorockets fire. Rocket A has an
1 answer
469 views
In reaching her destination, a backpacker walks with an average velocity of 1.30 m/s, due west. This average velocity results,
1 answer
461 views
Suppose a car is traveling at +24.8 m/s, and the driver sees a traffic light turn red. After 0.372 s has elapsed (the reaction
2 answers
969 views
A heavy truck and a small car collide head-on. Before the collision they are going the same speed. Which of the following
1 answer
1,044 views
A spacecraft is traveling with a velocity of v0x = 5040 m/s along the +x direction. Two engines are turned on for a time of 801
1 answer
459 views
A golfer hits a shot to a green that is elevated 2.60 m above the point where the ball is struck. The ball leaves the club at a
1 answer
615 views
An electron is a subatomic particle (m = 9.11 x 10-31 kg) that is subject to electric forces. An electron moving in the +x
1 answer
509 views
You are in a hot-air balloon that, relative to the ground, has a velocity of 6.14 m/s in a direction due east. You see a hawk
1 answer
1,053 views
The space probe Deep Space 1 was launched on October 24, 1998. Its mass was 474 kg. The goal of the mission was to test a new
3 answers
511 views
What is the period of Earth's (nearly) circular motion around the Sun?
(2*pi*r)/T 1 year (1 year)/(2*pi) (2*pi)/(1 year) 2*pi*(1
1 answer
941 views
A woman stands on a scale in a moving elevator. Her mass is 56.0 kg, and the combined mass of the elevator and scale is an
2 answers
615 views
The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is
2 answers
563 views
A man seeking to set a world record wants to tow a 110000-kg airplane along a runway by pulling horizontally on a cable attached
2 answers
503 views
A train consists of 50 cars, each of which has a mass of 7.2 × 103 kg. The train has an acceleration of +7.2 × 10-2 m/s2.
3 answers
1,070 views
A massless rope passes over a massless, frictionless pulley. One end of the rope is connected to box 2, and the other end is
2 answers
883 views
A satellite sitting on the ground has a weight of 5000 N. When it is placed in orbit 500 km above the surface of the Earth
2 answers
864 views
If you suddenly multiplied the mass of Earth by a factor of 4, how would the period of a satellite change, if the radius of its
1 answer
368 views
I eat a 500 Calorie lunch and go hiking up a mountain afterwards. Assuming that chemical energy is converted to gravitational
1 answer
340 views
A pitcher throws a 0.107-kg baseball, and it approaches the bat at a speed of 31.7 m/s. The bat does 77.9 J of work on the ball
2 answers
570 views
A pendulum consists of a small object hanging from the ceiling at the end of a string of negligible mass. The string has a
2 answers
852 views
A baby turtle swings on a playground swing. If his turtle mom comes and sits with him, the period of the swing's oscillation
1 answer
424 views
A long, thin rod is cut into two pieces, one being twice as long as the other. To the midpoint of piece A (the longer piece),
4 answers
3,562 views
A solid circular disk has a mass of 1.67 kg and a radius of 0.144 m. Each of three identical thin rods has a mass of 0.351 kg.
2 answers
858 views
A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its center. Rotating flywheels
7 answers
3,869 views
Consider a cube of an unknown material. When heated by 10 K, each side expands by 1%. Using *only this information*, what is the
2 answers
974 views
A sealed can is filled completely with methyl alcohol. Which of these materials could the can be made of so that it would not
1 answer
887 views
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might
4 answers
1,369 views
A sealed box containing a chunk of ice is made of 2cm thick wood, a good thermal insulator. The air outside the box is warm. It
1 answer
369 views
When you blow on a spoonful of soup to cool it, this is an example of:
Natural convection Forced convection Conduction
1 answer
417 views
The igloo shown at the very start of chapter 13 is meant to keep out the cold. Which would work better: an igloo made of ice
1 answer
365 views
Assuming there is no conduction or convection operating, a cold object in a warm room:
A.Radiates more energy than it absorbs
3 answers
477 views
Which kind of pot would be better to use on a halogen cooktop?
A. A shiny stainless steel pot B. A black cast iron pot C. It's
3 answers
477 views
As the drawing shows, two thin strips of metal are bolted together at one end and have the same temperature. One is steel, and
3 answers
1,498 views
An aluminum can is filled to the brim with a liquid. The can and the liquid are heated so their temperatures change by the same
2 answers
563 views
The latent heat of vaporization of H2O at body temperature (37°C) is 2.42 x 106 J/kg. To cool the body of a 77.6-kg jogger
4 answers
4,354 views
In an old house, the heating system uses radiators, which are hollow metal devices through which hot water or steam circulates.
4 answers
3,518 views
A 1.24g sample of a hydrocarbon, when completely burned in excess of O2(g), yields 4.04g CO2 and 1.24g H20. Determine the
4 answers
1,301 views
What's the percentage of the H202 that has been consumed if you use 11.5ml
of water, 3.0ml buffer, 2.5ml KI, 1.0ml starch, 1.0ml
1 answer
454 views
The equilibrium bond length of 1
H35Cl is 126 pm. What is wavelength of the required electromagnetic radiation to excite the
2 answers
513 views
KCl crystallizes in a structure like NaCl. The ionic radius of Na+ is 0.525 times the ionic radius of Cl^- and 0.714 times the
1 answer
587 views
What is the radius of the largest sphere that can be placed at the center of a face-centered cubic unit cell of a cubic
4 answers
1,677 views
What is the first step in solving the equation: 2/3x − 5 = 27
3 answers
25 views
How did the U.S.-Japan relationship evolve in the years immediately following World War II?
4 answers
85 views
The difference between the governments of North and South Korea following the Korean War is best described in which statement?
A.
3 answers
54 views
Despite the devastation caused by flooding, large populations of people in East Asia live near rivers and the coast for all of
3 answers
162 views
Which Chinese philosophy, later embraced by Japanese warriors for its emphasis on obedience and social harmony, is referenced
3 answers
156 views
Which country is MOST PROBABLY linked to limitations on personal freedoms such as freedom of speech, freedom of religion, and
3 answers
198 views
Which country is MOST PROBABLY linked to limitations on personal freedoms such as freedom of speech, freedom of religion, and
3 answers
175 views
In which country are citizens most prohibited from involvement in political processes?
A. Japan B. North Korea C. United States
3 answers
111 views
