Master Physics with Fun Quizzes & Brain Teasers!

>Question 21 ptsA 5000 Newton block rests on the ground over 25 m of area. What pressure does the block exerton the ground in N/m?200500O 5000O 25Question 31 pts
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A race horse can run a mile race in just under 2 minutes. Is it possible forthe race horse to run a kilometer race in 2 minutes? Why and Why not?Write your justifications.
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O uniform speed37. Choose the best answer.If you were told that a ship traveled from San Francisco to Honolulu, a distance of 3,841 km in 135.5 hours, what was the ship's speed?127.13 km/h28.35 km/h34.98 km/h15 km/hOnone is correct
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shows a map of Olivia's trip to a coffee shop. She gets on her bike at Loomis and then rides south 0.9mi to Broadway. She turns east onto Broadway, rides 0.8 mi to where Broadway turns, and then continues another 1.2mi to the shop. What is the magnitude of the total displacement of her trip?
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Question 20A graduated cylinder contains 100 mL of a liquid. The mass of thegraduated cylinder with the liquid is 145 grams. The mass of thegraduated cylinder when empty is 45 grams. The liquid is most likelyO Chloroform (Density = 1.492 g/mL)Water (Density = 1 g/mL)O Corn oil Density = 0.925 g/mL)O Ethanol (Density = 0.789 g/mL)
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Which of the following iS an example of a falsifiable hypothesis that could lead to scientific knowledge? A. Loch Ness has a giant reptile living in it.B. Humans were created.C. Aliens have crashed on Earth.D. No aliens have crashed on Earth.
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A blackbody has asurface area of 2.00 m^2.Find the energy emittedper minute from thisarea if the temperatureis 398 K. Express theanswer in joules. TheStefan-Boltzmannconstant is 5.67 10^-8 W/m^2K^4
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Bumper car A (281 kg) moving+2.82 m/s makes an elasticcollision with bumper car B(209 kg) moving -1.72 m/s.hat is the velocity of car A afterthe collision?(Unit = m/s)
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The second test is for solubility. If the substance is soluble in water, then it is likely
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Can someone help me with these problems?
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three grams of the same substance in different phases are stored in three different containers each containers.each container is barely large enough to hold a substance. which statement can be known about the behavior of the atoms in each container?
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Sport is an attractive activity for young people, and is often used as a draw card to recruit children and ...................... people to health andeducation programs.
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Are tsunamis earthquakes, or are they CAUSED by earthquakes?
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Suppose a truck has a momentum of 40,120 kg meters per second and a mass of 1,180 kg. What is the trucks velocity?4.7 107 meters per second47 107 meters per second34meters per second3.4
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Two metal disks are welded together and are mounted on a frictionless axis through their common centers. One disk has a radius R1 = 2.60 cm and mass M1 = 0.810 kg and the other disk has a radius R2 = 5.00 cm and mass M2 = 1.58 kg . (Figure 1) A string of negligible mass is wrapped around the smaller disk, and a 1.50-kg block, is suspended from the free end of the string. The block is released from rest a distance of 2.10 m above the ground. What is the block's speed just before it hits the ground?
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A 15 kg dog jumps out a stationary sled which has a mass of 40 kg. Ifthe dog's velocity is 1.2 m/s, what is the velocity of the sled?l
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A compound microscope consist of an objective lens of focal length of 0.5cm and an eyepiece of focal length 1cm. The two lenses are separated by distance 14cm. What is the position of the object if the final virtual image is formed at a distance of 25cm from the eyepiece. Calculate also the linear magnification of the instrument.
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4.A 200 kg cannon fires a 5 kg chicken into the air at a velocity of 100m/s. Calculate the velocity of the cannon due to recoil.
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can someone help me ?
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2. The weight of a boat without load is 12 000 N and the volume of the immersed portion of the boat is 5.0 m. [ Density of sea water is 1020 kg m-] as shown in DIAGRAM 2 DIAGRAM 2 Calculate o The buoyant force exerted to the boat. The maximum mass of load that can be supported by the boat so that it will not sink completely.
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Limestone formations in caves are considered what kind of weathering?A. chemicalB. biologicalC. mechanicalD. hydraulic
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The Doppler Effect or shift can be observed with light just as with sound. The frequency of light emitted from a star shifts, depending on whether it is moving toward or away from Earth. Would a yellow star's color become redder or bluer if it were moving away from Earth? Explain.
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Why is soil considered a non-renewable resource?A. There is a limited quantity of nutrients in soil.B. Soil is no longer made in nature and can never be replaced.C. The cost of creating soil is too high for it to be a reasonable option.D. Soil can only be formed by natural processes over hundreds or thousands of years.
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You need to get to class, 300 meters away, and you arrive in 1 minute. What speed were you walking? (calculate in meters per second).
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