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3 years ago

The tundra is located _______.

Physics

2 answers:

Leona [35]3 years ago

8 0

Answer:

d: both north and south

Explanation:

USPshnik [31]3 years ago

4 0

Answer:

A. north of the equator is the answer.

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You grab a car door handle in the summer (energy transfer to heat up the handle ____) and it burns you through energy transfer.

Cerrena [4.2K]

Answer: conduction

Explanation:

Because you are physically touching the handle

6 0

3 years ago

A student claims that gravitational fields exist between objects that are not in contact with each other. She creates a diagram

VashaNatasha [74]

Answer:

Option B. The distance between the objects in Figure A is shorter than the distance between the objects in Figure B.

Explanation:

The force of attraction between two masses is given by the following equation:

F = GM₁M₂ / r²

Where:

F => is the force of attraction

M₁ and M₂ => are the masses of the two objects

G => is the gravitational constant.

r => is the distance between the two objects

From the above formula,

The force of attraction (F) is directly proportional to the product of the two masses and inversely proportional to the square of their apart.

This implies that:

1. An increase in the masses of the object will bring about an increase in the force of attraction and a decrease in the masses will leads to a decrease in the force of attraction.

2. An increase in the distance between the two masses will leads to a decrease in the force of attraction and a decrease in the distance between the two masses will lead to an increase in the force of attraction.

Considering the options given in the question above, option B gives the correct answer to the question.

8 0

4 years ago

in a _system supply and demand forces affect the production and consumption decisions. There is little to no _control in such a

Alchen [17]

Answer:

in a free market system supply and demand forces affect the production and consumption decisions. There is little to no government control in such a system .

Explanation:

A free market is an economic system in which prices are based on competition between private actors and are not affected by other factors besides supply and demand, that is, where there are no external variables that condition the market.

Free market economy systems are characterized by limited government intervention, which characterizes democratic, liberal states and the modern global economy, in which the market in its private face makes most of the economic decisions, leaving the government a minimum amount of necessary regulations.

5 0

4 years ago

The average distance from Earth to the Moon is 384,000 km.

Fofino [41]

Answers:

1) Time it takes to travel to the moon

Velocity $V$ is defined as:

$V=\frac{d}{t}$

Where:

$d=384,000 km$ is the average distance from Earth to the Moon

$V=800 km/h$ is the velocity of the spacecraft

$t$ the time

Isolating $t$ :

$t=\frac{d}{V}$

$t=\frac{384,000 km}{800 km/h}$

$t=480 h$ This is the time in hours

2) Time in days

A day is equivalent to 24 hours:

$1 day= 24 h$

Hence:

$t=480 h (\frac{1 day}{24 h})$

$t=480 h (\frac{1 day}{24 h})=20 days$ This is the time in days

3) Time in months

A month is equivalent to 30.4 days:

$1 month= 30.4 days$

Hence:

$t=480 h (\frac{1 day}{24 h})$

$t=20 days (\frac{1 month}{30.4 days})=0.65 months$ This is the time in months

6 0

3 years ago

A wire is oriented along the x-axis. It is connected to two batteries, and a conventional current of 2.4 A runs through the wire

Deffense [45]

Answer:

$\vec{F}=0.40176 N \hat{k}$

Explanation:

To calculate the force we need to use this equation

$\vec{F}=\int\limits^L_0 {i(\vec{dl}\times\vec{B})}$

where L is the total length of the wire

So in this case the small element of current is

$\vec{dl} = dx \hat{i}$

Because x is the direction of the current flow.

As is said in the problem B is such that

$\vec{B} = B \hat{j} = 0.62\hat{j} [ T]$

so to use the equation above we first calculate the following cross product:

$\vec{dl}\times\vec{B}=dx \hat{i}\times B \hat{j} = Bdx\hat{k}$

so the force:

$F = \int\limits^L_0 {i(\vec{dl}\times\vec{B})}=\int\limits^L_0{iBdx\hat{k}}$

So here we use the fact that B=0 in any point of the x axis that is not $x^{'}=0.27 [m]$ , that means that we only need to do the integration between a very short distant behind the point $x^{'}=0.27 [m]$ and a very short distant after that point, meaning: