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IrinaVladis [17]

3 years ago

5

Hey guys,I hope u r gonna answer this question fast,SI system is extended from of MKS system.Why? I will be waiting for the answ

er. Good luck thank u

2 answers:

DerKrebs [107]3 years ago

6 0

Answer:

Because SI system has fundamental units of MKS System

jarptica [38.1K]3 years ago

6 0

Answer:

Explanation: the unit of length ,mass , and time are same in both the system , thus, the SI system is the extended from of MKS system.

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A ship going from sea water to river water has to displace more water to (a) change the buoyant force (b) decrease the buoyant f

grin007 [14]

Answer:

Change, or increase, the buoyant force.

Explanation:

As the salt water of the sea is denser than the river's fresh water, the boat will rise when entering the sea from the river and sink (to increase the buoyant force) when entering the river from the sea.

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Mt. Everest is 29,028 feet high. How many miles is this?

Viefleur [7K]

Mount. everest is 5.499 miles

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3 years ago

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Which statement best describes the relationship between mass and gravitational attraction (pull)?

Gnesinka [82]

Answer:

The first option, "The more mass an object has, the greater the gravitational pull. "

Explanation:

Newton's Law of Gravity states that $F_G=\frac{Gm_1m_2}{r^{2}}$ , where G is the gravitational constant, $m_1$ and $m_2$ are the masses of the two objects, and <em>r</em> is the distance between the objects' centers. Because the objects' masses are in the fraction's numerator, they are directly proportional to $F_G$ , and increasing the mass of one or both objects increases the gravitational pull.

Please have a great day! I hope this helps you understand the question!

7 0

3 years ago

Place several E-Field Sensors at a few points on different equipotential lines, and look at the relationship between the electri

Vlada [557]

Answer:

2.

Explanation:

If a charge is moved along a equipotential line, no work is done on the charge.
If we remember that the work done by an external force, is just the product of the component of the force parallel to the displacement, if the force produces no work, this means that is perpendicular to the displacement.
So, as the electric field is just the force per unit charge, and has the same direction as the force (for a positive charge), it must be perpendicular to any equipotential line.
As the electric field (by convention) has the same direction as it would be taken by a positive test charge, and positive charges move from higher voltages to lower ones, the electric field is directed toward lines of lower voltages (like it happens between the plates of a capacitor).

3 0

3 years ago

A sled is at rest at the top of a slope 2 m high. The sled has a mass of 45 kg. What is the sled's potential energy?

kap26 [50]

Answer:

PE = 882 J

Explanation:

Through the International System we know that the gravity of the earth is 9.8 m/s², so...

Data:

m = 45 kg
g = 9.8 m/s²
h = 2 m
PE = ?

Formula:

$\boxed{\bold{PE=m*g*h}}$

Replace and solve:

$\boxed{\bold{PE=45\ kg*\ 9.8\frac{m}{s^{2}}*2\ m}}$

$\boxed{\boxed{\bold{PE=882\ J}}}$

The potential energy of the sled is <u>882 Joules</u>.

Greetings.

8 0

3 years ago