4,125 Answered Questions for the topic Science

Science Physics

3d

#### physics homework question

A small mailbag is released from a helicopter that is descending steadily at 1.10 m/s.(a) After 5.00 s, what is the speed of the mailbag?v = ___m/s(b) How far is it below the helicopter?d=...
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Science Physics

3d

#### physics homework question

A ball is thrown directly downward with an initial speed of 7.95 m/s, from a height of 30.2 m. After what time interval does it strike the ground?

6d

#### Need help with this

A container holds a mixture of 3.01 x 10^23 molecules of H22 gas, 1.20 x 10^24 molecules of CO22 gas, and 1.50 x 10^24 molecules O22. If the total pressure of the container is 1.00atm, what is the...
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6d

#### Which of these groups of elements would be expected to have similar chemical properties?

F, Cl, BrC, Ge, PbP, S, ArPt, Au, Hg

6d

#### Which of these groups of elements would be expected to have similar chemical properties?

F, Cl, BrC, Ge, PbP, S, ArPt, Au, Hg

Science Chemistry

6d

#### Chemistry Homework

Which of these electron configurations represents the ground state electron configuration of a d sublevel metal?1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f91s2 2s2 2p6 3s2 3p2 4s11s2 2s2...
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10d

#### Why don't probiotics last/thrive?

If probiotics repopulate the gut, why would one have to keep taking them? Once re-established in the gut biome, they should replicate like all other commensals.I read on 1 website that some strains...
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#### Box-and-whiskers, algebra

Construct a box-and-whisker plot of the following numbers:70, 55, 43, 66, 32, 35, 48, 68, 69, 39, 31, 52

#### Word problem, algebra

Blues vary inversely as purples cubed. When there are 250 blues, there are 2 purples. How many blues are present when there are 5 purples?

#### Distance, algebra

The distance a body falls varies directly as the square of the time that it falls. If it falls 972 meters in 18 seconds, how fa will it fall in 2 seconds?

#### Intrest, money, algebra

Gretchen deposited $7000 in an account that earns 2% interest compounded annually..(a) Write an equation that expresses the amount of money in the account as a function of n, where n equals the...
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30d

#### Word problem, algebra

Pressure varies inversely as volume. When the pressure is 16 pascals, the volume is 84 liters. What would the volume be if the pressure is reduced to 12 pascals?

#### Word problem, algebra

At noon, the hot air balloon headed north at 8 miles per hour. Three hours later, the glider headed south from the same location at 16 miles per hour. At what time will the hot air balloon be 168...
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#### Distance rate, time algebra

The distance traveled by a car traveling at a constant speed is directly proportional to the time spent traveling. If the car went 910 miles in 13 hours, how far will it go in 14 hours?

#### Distance rate and time

Sally left the city for vacation. Dan left 8 hours later going 40 mph faster to catch up. After 7 hours Dan caught up. What was Sally's average speed?

#### Distance, rate, and time

A cargo plane flew from the US across the Atlantic at two hundred seventeen mph, and flew back to the US at two hundred thirty-seven mph. Given that the first trip took two hours longer, how long...
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#### Distance, rate, and time

Alyssa left downtown Houston, and three hours later, Joan left going 54 mph faster to catch up. After another two hours, Joan caught up. Find Alyssa's average speed.

#### Distance, rate, and time

Melanie left Greensboro traveling sixty-nine mph. Sally, to catch up, left some time later driving at seventy-eight mph. Sally caught up after three hours. How long was Melanie driving before Sally...
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#### Distance, rate, and time

Jessica traveled to burbank by car. Going there took 5 hours, and the return trip lasted 8 hours. Jessica averaged a speed of 53 mph while returning. Find the average speed of the trip there.

Science Physics

05/03/23

#### A box is pushed up a frictionless ramp. The box has a mass of 5.6 kg and the pushing force acts in a direction parallel to the ramp.

The ramp is at an angle of 15 degrees with the horizontal. If the acceleration of the box is 2 m/s2 up the ramp, what is magnitude of the pushing force? (Answer in Newtons)

Science Physics

05/03/23

#### An angry mascot kicks a giant plastic egg filled with candy.

The egg leaves the mascot's foot with a velocity of 8.4 m/s at an angle of 20 degrees above the horizontal. If you neglect air resistance, how far from the angry mascot will the egg land? Answer in...
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Science Physics

05/03/23

#### You are feeling bored and decide to take a walk. You walk 49.4 m at a direction 30 degrees N of W and then 30 m east

What is the magnitude of the vector that describes your position with respect to your starting point. (If the first part of your trip is vector A and the second part is vector B, you are looking...
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#### Coin word equation

Michelle has a purse that contains 7 silver coins and 5 gold coins. She draws one coin at random and then draws a second coin. What is the probability that the first coin is gold and the second...
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#### Money word equation

During the sale, the price of the used car was marked down 10 percent. If the sale price of the used car was $1800, what was the price of the used car originally?

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