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Question1
A bus travels 330 km south along a straight path with an average velocity of 84 km/h to the south. The bus stops for 22 min, then it travels 220 km south with the average velocity of 78 km/h to the south. How long does the total trip last?
Reply in units of h
Question2
A Cumulonimbus cloud (a thunderhead) can contain 109 kg of water. They have a vertical thickness that stretches from around 2,000 m to about 10,000 m above ground. If one supposes that Cumulonimbus clouds are uniform, how much gravitational potential energy do they have?
State Newton's three laws of Motion and What is the difference between elastic collision and inelastic collision
Assume that the sun radiates as a blackbody , if Lp=5000A for the solar spectrum, what is the surface temperature of the sun
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The distance between the eyepiece and the objective lens in a certain compound microscope is 24.5 cm. Find the overall magnification of the microscope
A student decides to spend spring break by driving 50miles dues east, then 50miles 30degrees south of east, How far will he drive, and how many vectors must he sum to calculate his displacement
A structural I beam is made of iron. A view of its cross-section and its dimensions is shown in the figure, where d = 2 cm, w = 29 cm, h = 30 cm, How many atoms are there in this section
A standing wave on a string fixed at both ends has three antinodes. The string is 85.0 cm long. What is the wavelength of this standing wave
What additional experiment can help you decide between these two possibilities.
A 3.00-m-long, 400 kg steel beam extends horizontally from the point where it has been bolted to framework of a new building under construction. A 74 kg construction worker stands at the far end of the beam.What is the magnitude of the torque abo..
Illustrate what is the maximum mass, m1, that can be hung from the chords before the 5.0kg mass just begins to move?
A whale swims due east for a distance of 3.8 km, turns around and goes due west for 7.9 km, What is the total distance traveled by the whale
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