1,159 Answered Questions for the topic physical science

Physical Science

21h

#### If red hot metal is put on paper in a vacuum, what happens to the paper?

I am asking out of pure curiosity. Without fire, how would the paper burn? Would it just blacken, or stay the same and just be really hot paper. Or would it still somehow turn to ash? It's too...
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11/01/22

#### Reliability of Information on the Web.

Instructions: The internet offers endless opportunities to obtain high-quality information on a wide variety of topics that are relevant to nutrition, but it also delivers an abundance of...
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Physical Science

11/01/22

#### Consider a massive 500 kg boulder and a 1.0 kg rock. If both are dropped from the same height at the same time, which will hit the ground first? (Assume there is no air resistance)

Physical Science

11/01/22

#### Two forces act on the same object. Force 1 is 6 N to the right. Force 2 is 7 N to the right. What is the net force?

Physical Science

11/01/22

#### Two forces act on the same object. Force 1 is 6 N to the right. Force 2 is 7 N to the right. What is the net force?

#### Reliability of Information on the Web.

Instructions: The internet offers endless opportunities to obtain high-quality information on a wide variety of topics that are relevant to nutrition, but it also delivers an abundance...
more

#### Find the magnitude and direction of the acceleration of a 500 kg elevator supported by a cable with a tension of 3000 N.

Solve a numerical "elevator problem" for the tension of an elevator cable or the acceleration of an elevator.

#### A 3 kg object is sliding to the left on a surface with a coefficient of friction of 0.2 at an initial velocity of 15 m/s. Determine the magnitude and direction of the acceleration of this object.

Calculate the acceleration of an object sliding on a flat rough surface (meaning there is friction).

#### An elevator is descending at a velocity of -2 m/s with an acceleration of +3.0 m/s^2 .

In this "elevator problem" with known velocity and acceleration, you must construct a free-body diagram of the elevator or the person inside and state whether the velocity is increasing or decreasing.
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Physical Science

10/23/22

#### If mass is increased, will force increase as well? I believe by the same proportion but I’m not sure.

Physical Science

10/06/22

#### The space shuttle Endeavor is launched to altitude of 500km above the surface of the earth. The shuttle travels at an average rate of 700 m/s. How long will it take for Endeavor to reach its orbit?

Physical Science

10/05/22

#### A horse is trotting at 2.52 m/s. How fast would it be going after 5.03 seconds if it has an acceleration of 2.5944 m/s^2?

Physical Science

10/05/22

#### If a car has an acceleration of 5.7148 m/s^2, how long will it take to go from 6.94 m/s to 39.8 m/s?

Physical Science

10/05/22

#### A car traveling 1.02 m/s speeds up to 8.75 m/s in 4.72 seconds. What was the car's acceleration?

To enter the unit for acceleration, use this: m/s^2

#### The shuttle lands on the runway at a speed of 105 meters/second. It then decelerates by parachute and comes to a complete stop in 60 seconds.

Assuming constant acceleration, calculate the distance required for the shuttle to come to a complete stop.

Physical Science

09/24/22

#### Joe Cool drives to see his girlfriend who attends another college

A) The 163 km trip takes 2.0 h. What was the average speed for the trip?B) The return trip over the same route takes 3.0 h because of heavy traffic. What is the average speed for the return trip?C)...
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Physical Science

09/22/22

#### true or false Conduction happens mainly in the upper atmosphere.

Physical Science

09/06/22

#### Do numbers less than one have a positive or negative exponent

Do numbers less than 1 have positive or negative exponents

Physical Science

09/01/22

#### Calculate the period T of a planet whose orbit has a semimajor axis of 25 AU

Physical Science

08/30/22

#### Calculate the period T of a planet whose orbit has a semimajor axis of 3.6 AU? What is Y?

Calculate the period T of a planet whose orbit has a semimajor axis of 3.6 AU? What is Y?

#### Need Help! Thankyou

. A lens has a focal length of 2m. A pencil is placed 3m from the lens.Where will the image of the pencil be formed? (show all work) (3 marks)Is the image inverted or upright? How do you know? (1...
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#### What is the difference in voltage between the plates? Science

Two large parallel plates are 2.0 cm apart. The strength of the electric field between them is 100.0 N/C . What is the difference in voltage between the plates?(a) −2.0 V(b) +2.0 V(c) 0 V(d) +20 VI...
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