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Mekhanik [1.2K]
3 years ago
8

(It made me choose physics as the category, but the class is Astronomy)

Physics
1 answer:
Vikentia [17]3 years ago
7 0
In order for an object or a projectile to leave Earth's gravitational pull, it must reach Earth's escape velocity, meaning reach a speed of 7 miles per second (~11 km per second).
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Which process allows a population Who become better adapted for survival in a specific environment
GalinKa [24]
Natural selection, it's simply when one animal outsmarts the rest and lives on to reproduce and carry on it's traits, when the animals who have not adapted well do not have the chance to reproduce, and the population dies off.
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3 years ago
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Calculate P3 (in W). W (b) Find the total power (in W) supplied by the source. W Compare the total power with the sum of the pow
noname [10]

Answer:

the principle of conservation of energy cannot be violated.

the correct one is: The total power is equal to the sum of the powers dissipated by the resistors.

Explanation:

The power in an electric circuit is given by

         P == I V

In a circuit with several components (resistors) the power dissipated is the current by the voltage in each resistance, by the principle of conservation of energy the current in each resistance is the same if the circuit is in series and the current is the same if The circuit is in parallel, but cannot be greater than the current supplied by the power source.

Therefore, the power dissipated by the entire circuit is the sum of the power dissipated by each part, since the principle of conservation of energy cannot be violated.

When reviewing the answers, the correct one is: The total power is equal to the sum of the powers dissipated by the resistors.

3 0
3 years ago
Calculate the density of a material that has a mass of 52.457 and a volume of 13.5
Arte-miy333 [17]
The density is about 3.88. You just have to divide the mass and the volume. You can check this on a calculator, too. Hope this helped
7 0
3 years ago
Is a whelk a carnivore?
arlik [135]
Herbivore: A animal/human that eats plant only.
Carnivore: A animal/human that eats meat.
Whelk is a name that implies to a variety of sea-snails / A large sea-snail. whelks are carnivores , they typically feed on worms ,mussels and other crustaceans.
7 0
4 years ago
Which characteristic is common in mature rivers?
lbvjy [14]

Answer: its b

Explanation: A river with a gradient that is less steep than those of youthful rivers and flows more slowly. A mature river is fed by many tributaries and has more discharge than a youthful river. Its channels erode wider rather than deeper

5 0
4 years ago
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