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Marina86 [1]
3 years ago
9

Question 15 of 15

Physics
1 answer:
mars1129 [50]3 years ago
6 0

Answer:

Momentum

Explanation:

-Conservation means that any quantity is kept constant.❌

-Force is product of mass and acceleration.❌

-Impulse is product of force and the period of action of the force.❌

-Momentum is the product of mass of a body and it's velocity.✔️

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The latent heat of fusion of alcohol is 50 kcal/kg and its melting point is -54oC. It has a specific heat of 0.60 in its liquid
sashaice [31]

Answer:

C

Explanation:

To melt the alcohol

Heat needed = M . L  = 2 . 25  = 50 kcal

To warm up the alcohol

Heat needed = M . sp. ht. . ∆t   = 2 . 0.6 . 100  = 120 kcal

Total heat needed = 170 kcal

Assuming that 0.6 kcal/ kg / ˚C  is the specific heat and that the answer is wanted in kcal ( a rather odd unit to be in use here.)

5 0
3 years ago
A town is considering building a biodiesel power plant that would burn biomass to generate electricity. Which of the following c
garik1379 [7]

Answer:

i think its B

Explanation:

i found the answer on another website hope its the right answer :)

6 0
2 years ago
Read 2 more answers
Suppose an asteroid had an orbit with a semimajor axis of 4 au. how long would it take for it to orbit once around the sun?
Nitella [24]

It would take <u> 8 years </u> for the asteroid to orbit once around the sun.

What is a semimajor axis?

  • In geometry, the major axis of an ellipse is its longest diameter: a line segment that runs through the center and both foci, with ends at the two most widely separated points of the perimeter.
  • The semi-major axis (major semiaxis) is the longest semidiameter or one half of the major axis, and thus runs from the centre, through a focus, and to the perimeter.
  • The semi-major axis of a hyperbola is, depending on the convention, plus or minus one half of the distance between the two branches.
  • Thus it is the distance from the center to either vertex of the hyperbola.
  • In astronomy, the semi-major axis is one of the most important orbital elements of an orbit, along with its orbital period.
  • For Solar System objects, the semi-major axis is related to the period of the orbit by Kepler's third law.

To know more about semi-major axis, refer:

brainly.com/question/26662489

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5 0
1 year ago
Which of the following describes the products of a chemical reaction? A. The original materials B. The substances that are chang
lianna [129]

The products of a chemical reaction are the substances that are changed and the chemicals on the right side of a chemical equation. The correct options are B and C.

<h3>What is chemical reaction?</h3>

The chemical reaction  is the reaction between two reactants which led to the formation of products.

The products are substances which forms after reaction. The reactants are the substances which are original materials.

The reactants lie on the left side and products lie on the right side of the reaction.

Thus, the correct options are B and C.

Learn more about chemical reaction.

brainly.com/question/22817140

#SPJ1

7 0
1 year ago
An ice cream truck is going 25m/s to the East. It accelerates to 45m/s in the same direction over 5s. What is its acceleration?
Naya [18.7K]

Hello!

We can use the kinematic equation:
a = \frac{v_f - v_i}{t}

a = acceleration (m/s²)

vf = final velocity (45 m/s)
vi = initial velocity (25 m/s)

t = time (5 sec)

Plug in the givens:
a = \frac{45-25}{5} = \frac{20}{5} = \boxed{4 m/s^2}

6 0
2 years ago
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