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4 years ago

Which produces more carbon dioxide?

1 answer:

6 0

It depends on the car and the home and what it is producing but most commonly it would be cars producing more carbon dioxide.

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Charcoal appears black in color because it

steposvetlana [31]

C. This is the idea of "black body radiation". Charcoal/carbon is a "perfect black body". Absorbs all radiation. There's a whole host of stuff about this in physics, including, I think, Planck's (Nobel Prize winner) black body radiation theory.

4 0

3 years ago

Read 2 more answers

A pilgrim uses a block and tackle to lift a 225 N crate a distance of 16.5 m. She pulls 33.0 m of rope with a force of 125 N. Wh

kenny6666 [7]

Answer:

Ideal mechanical advantage of the machine is 2

Explanation:

Ideal mechanical advantage of the machine is

$MA=\frac{op}{ip} \\$

here we have to consider the distance

$MA=\frac{33}{16.5} \\MA=2$

7 0

3 years ago

Learning Goal: To practice Problem-Solving Strategy 7.2 Problems Using Mechanical Energy II. The Great Sandini is a 60.0-kg circ

andreev551 [17]

Answer:

v = 15.8 m/s

Explanation:

Let's analyze the situation a little, we have a compressed spring so it has an elastic energy that will become part kinetic energy and a potential part for the man to get out of the barrel, in addition there is a friction force that they perform work against the movement. So the variation of mechanical energy is equal to the work of the fictional force

$W_{fr}$ = ΔEm = $Em_{f}$ -Em₀

Let's write the mechanical energy at each point

Initial

Em₀ = Ke = ½ k x²

Final

$Em_{f}$ = K + U = ½ m v² + mg y

Let's use Hooke's law to find compression

F = - k x

x = -F / k

x = 4400/1100

x = - 4 m

Let's write the energy equation

fr d = ½ m v² + mgy - ½ k x²

Let's clear the speed

v² = (fr d + ½ kx² - mg y) 2 / m

v² = (40 4.00 + ½ 1100 4² - 60.0 9.8 2.50) 2/60.0

v² = (160 + 8800 - 1470) / 30

v = √ (229.66)

v = 15.8 m/s

5 0

4 years ago

Read 2 more answers

Is a nucleus that absorbs at 4.13 δ more shielded or less shielded than a nucleus that absorbs at 11.45 δ?

NeTakaya

Explanation:

A nucleus that absorbs 11.45δ is less shielded than a nucleus that absorbs at 4.13δ.

the nucleus that absorbs at 11.45δ requires weaker applied field strength to come into resonance than the nucleus that absorbs at 4.13δ.

3 0

3 years ago

Consider a magnetic force acting on an electric charge in a uniform magnetic field. Which of the following statements are true?

NISA [10]

Explanation:

The magnetic force acting on the charged particle in magnetic field is given by :

$F=qvB\ \sin\theta$

Here,

q is the charged particle

v is the speed of particle

B is magnetic field

$\theta$ is the angle between the v and B.

The correct statements for the magnetic force are :

An electric charge moving perpendicular to a magnetic field experiences a magnetic force. In this case, $\theta=90^{\circ}$ . It will experience maximum force.
The direction of the magnetic force acting on a moving electric charge in a magnetic field is perpendicular to the direction of motion.
A magnetic force is exerted on an electric charge moving through a uniform magnetic field.
The direction of the magnetic force acting on a moving charge in a magnetic field is perpendicular to the direction of the magnetic field.

8 0

4 years ago