which of these statements best explains why the difference between summer and winter temperatures is greatet in Russia thanin FL

Answers

Answer 1

Answer: I don't know your statement, but one explanation for this is that Russia is mostly located on land, away from water and Florida is surrounded by water.

Water takes up the heat from the environment, so it has the effect of making the temperatures of objects around it milder: cooling down when hot, warming up when too cold.

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Which situations contain unbalanced forces? Check all that apply.

Answers

Answer: A book falls to the floor.

A car skids to a stop.

A foam ball launches

Explanation:

Answer:

Explanation:

Without seeing the options i can tell you this:

A balanced force is equal on both sides

The friction would equal the force

The amount on the left (friction side) would equal the amount on right (force side)

Or the net force would equal zero

You should post the answer options for more help

a graph depicts force versus position. what represents the work done by the force over the given displacement?

Answers

The area under the graph. W = f d cos(theta), so you want the number that is force times displacement, which corresponds to the area under the graph.

What is the minimum coeffecient of static friction μmin required between the ladder and the ground so that the ladder does not slip?

Answers

Answer:

$\mu = (1)/(2tan\theta)$

Explanation:

let the ladder is of mass "m" and standing at an angle with the ground

So here by horizontal force balance we will have

$\mu N_1 = N_2$

by vertical force balance we have

$N_1 = mg$

now by torque balance about contact point on ground we will have

$mg((L)/(2)cos\theta) = N_2(L sin\theta)$

so we will have

$N_2 = (mg)/(2tan\theta)$

now from first equation we have

$\mu (mg) = (mg)/(2tan\theta)$

$\mu = (1)/(2tan\theta)$

Which of the following rules should be used to keep the appropriate distance between your vehicle and the vehicle in front of you?

Answers

The correct answer is C) Two-second rule.

This means that a driver must maintain a distance that would take at least 2 seconds to cover, at the current speed of the car. This means that in case the car in front suddenly comes to a full stop, the driver of the car behind has 2 seconds react and hit his own brakes. A two-car length rule might be alright when driving at low speeds, but when going at high speeds (on a highway, for example), a two-car length can be covered in a fraction of a second, which means a sudden braking by the car in front would almost guarantee an accident.

Answer:

4-second following distance

Explain how DNA codes for traits

Answers

the genetic code dictates which proteins the cell manufacturer. proteins are strands of amino acids. the sequence of nucleotides in DNA genes determines the order of amino acids in a protein. this is the direct connection between your genes and your traits.

The charges on two metallic balls are 5.0 and 7.0 coulombs respectively. They are kept 1.2 meters apart. What is the force of interaction between the two?

Answers

Answer: the correct answer is 8*10^-11

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