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Darya [45]
2 years ago
9

You have to push a heavy box across three surfaces: a grassy field , ice rink, and a concrete playground. Which surface will be

easiest to push the box across and WHY ?
Physics
1 answer:
alukav5142 [94]2 years ago
7 0

Answer:

The ice rink because the ice is the surface with the lowest friction.

Explanation:

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You can make a magnetic field stronger by doing the following:

1. Increasing the number of turns on the coil.

2. Increasing the current.

3. Placing an iron core inside the solenoid.

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3 years ago
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Why are some starburst galaxies much brighter in infrared than they are in visible light?
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4 0
2 years ago
A mole is defined as the number of atoms in an exact mass of which isotope?
alisha [4.7K]

Answer:

Isotope of carbon-12.

Explanation:

The MOLE  is a unit of measurement of the amount of a pure substance which contains exactly the same number of chemical units which could be (Atoms, molecules etc.) posses atoms in exactly 12 grams of isotope of carbon-12 (i.e., 6.022\times 10^{23}).

So, The mole is the Notation  used for an amount 6.022\times 10^{23}  as same the 12 number is used for dozen for making count of Bananas and many more.

The 6.022\times 10^{23} is known as the fundamental constant names Avogadro's number (N_{A}), It is in the honor of Italian scientist Amedeo Avogadro.

7 0
3 years ago
Find the amount of force required to move an object of 1200 kg at a velocity of 54 km/hr?​​
Mkey [24]

Answer:

0 Newtons

Explanation:

The velocity of the object does not change, it is a constant 54 km/hr. When velocity does not change, acceleration is zero. Using the formula Force = mass x acceleration, we find:

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3 years ago
Which change to a circuit is most likely to decrease its electrical power?
Harlamova29_29 [7]

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It's D

Explanation:

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