PHYSICS HIGH SCHOOL

Why was the Battle of the Bulge significant?a. It marked the Allies' first victory in a land battle.
b. It marked the Axis powers' first loss in a land battle.
c. It marked the liberation of the death camps.
d. It marked the last German offensive.

Answers

Answer 1
Answer: The Battle of the Bulge in the winter of 1944 was the last Great German offensive of the Second World War.

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Cells with similar preferences are arranged closer together in the auditory cortex.
T/F: The weight of an astronaut plus her space suit on the moon is only 255 n
What are different type of plastids explain them?​
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Mechanical waves can travel through _______. vacuums only


both vacuums and mediums


mediums only

Answers

mediums only, mechanical waves always propagate through medium

One consequence of Einstein's theory of special relativity is that mass is a form of energy. This mass-energy relationship is perhaps the most famous of all physics equations: E=mc2,
where m is mass, c is the speed of the light, and E is the energy. In SI units, the units of speed are m/s. For the preceding equation to have consistent units (the same units on both sides of the equation), the units of E must be which of the following?

Answers

Answer:

Unit of energy is kg-m/s or Joules.

Explanation:

The mass- energy relationship in physics is given by :

E=mc^2

Where

m is the mass of the object

c is the speed of light

The SI unit of m is kilogram while the SI unit of c is as same as speed of light i.e. m/s. So, the unit of energy is kg-m/s. It is also equivalent to Joules.

So, the SI unit of energy is kg-m/s or Joules. Hence, this is the required solution.
Joule is the si unit for energy

Inertia is ______ to mass. directly proportional inversely proportional equal to not related to

Answers

Answer;

Directly proportional

Explanation

  • Inertia is directly proportional to mass of an object. Therefore, when the force of inertia increases the mass also increases, and when it decreases the mass also decreases.
  • According to Newton's first law of motion, also known as the law of inertia; a body remains at a state of rest or constant motion and in the same direction unless acted upon by an external force.
  • Mass of a body is totally dependent on inertia of an object, such that the more inertia an object or a body has, then the more mass it has. which means inertia and mass are directly proportional. Therefore, an object with high mass has an increased tendency to resist change in its state of motion.
Directly proportional. As mass increases, inertia increases and vice versa

What is the strength of the electric field 0.020 m from a 12 µC charge?

Answers

The electric field strength at a distance of 0.020 m from a 12 µC point charge is approximately 2.69 x 10⁸ N/C.

What is the electric field strength?

The electric field strength (E) at a point near a point charge is given by the equation:

E = k Q / r²

where:

k is Coulomb's constant, equal to 8.99 x 10⁹ Nm²/C²

Q is the magnitude of the point charge in coulombs

r is the distance from the point charge

Substituting the given values:

Q = 12 x 10⁻⁶ C

r = 0.020 m

E = k Q / r²

E = 8.99 x 10⁹ Nm²/C² x 12 x 10⁻⁶ C / (0.020 m)²

E = 2.69 x 10⁸ N/C

So the electric field strength at a distance of 0.020 m from a 12 µC point charge is approximately 2.69 x 10⁸ N/C.

Learn more about the electric field strength here:

brainly.com/question/15170044

#SPJ6
E = ko * C / d^2 = [9.0x10^9 N/m^2C^2 ]* [12x10^-6C]/[(0.020m)^2] = 2.7^10^8N/C

A spring is stretched 0.75 m by using a force of 30 N. What is the spring constant

Answers

Hi there!

40 N/m

We can use Hooke's Law:

F = kx or F = -kx

F = force (N)

k = Spring constant (N/m)

x = displacement (m)

We are given the force and displacement, so:

F/x = k

30/0.75 = 40 N/m

What is the unit of mu (m) in the equation of Ffriction=miu F formal explan
​

Answers

Both F's are forces, so µ must be unitless/dimensionless.

F[friction] = µ F[normal]

Or, more explicitly in terms of the units:

(Newtons) = (constant) (Newtons)
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