2 dm expressed in milimeters

__________________ refers to the average increase in the Earth's temperature, which causes changes in climate.

Mamont248 [21]

Greenhouse effect = CO2 emissions in the air causing rising temperature causing global warming and climate changes

5 0

3 years ago

The engine in an imaginary sports car can provide constant power to the wheels over a range of speeds from 0 to 70 miles per hou

kirill115 [55]

Answer:

Part A

it would take 6 sec

it would take 3 sec

Explanation:

We are told that the power supplied to the wheel is constant which means that the sport car is gaining energy i.e

$power \ \alpha \ energy$

Hence if power is constantly supplied energy constantly increase

From the formula of the Kinetic energy

$KE = \frac{1}{2} mv^2$

we can see that as the speed doubles from 29 mph to 58 mph the energy needed is $2^2$ = 4 times of the energy from the formula

Also the time needed would also be 4 times because energy i directly proportional to time

Hence to reach 58mph the time that it would take is

= $4* 1.5sec = 6sec$

We are told that the ground pushes the car with a constant force and

F = ma

this means that the acceleration is also constant

now from newtons law

v = u +at

Looking at it we see that final velocity is directly proportional with time

hence it would take twice the time to reach twice the final velocity

Time to reach 58mph = 3 s

since time to reach 29 mph( $\frac{1}{2} \ of \ [58mph]$ ) =( $\frac{1}{2} \ of \ 3sec$ )1.5 s

6 0

3 years ago

Fe2(co3)3 number of atoms

Vera_Pavlovna [14]

Answer:

14 atoms

Explanation:

Number of atoms in Fe₂(CO₃)₃

An atom is the smallest indivisible particle that takes part in a chemical reaction.

In Fe₂(CO₃)₃; we have:

Elements Number of atoms

Fe 2

C 3

O 3(3) = 9

Total number of atoms = 2 + 3 + 9 = 14 atoms

7 0

3 years ago

Give the SI unit. For physics

IrinaVladis [17]

Answer:

metre (m) - unit of length

kilograms (kg) - unit of mass

second (s) - unit of time

ampere (A) - unit of electrical current

kelvin (K) - unit of temperature

mole (mol) - unit of the amount of substance

Explanation:

6 0

3 years ago

Explain how forces affect the motion of the planets

dedylja [7]

Any moving object in space will travel in a straight line at the same speed forever, planets included. The planets would be moving in straight lines, but the sun's gravity pulls them toward it. The force of gravity causes the moving planets to travel in roughly circular orbits around the sun.

5 0

3 years ago

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