PHYSICS HIGH SCHOOL

A photon with a wavelength of 2.29 × 10^–7 meter strikes a mercury atom in the ground state.Based on your answer to question 79, state if this photon can be absorbed by the mercury atom.
Explain your answer.

Answers

Answer 1
Answer: The photon can be absorbed and the energy of the photon is exactly equal to the energy-level difference between the ground state and the level d.

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Is it possible to fly from Norway to USA across the North Pole?

Answers

Sure.  The Earth is a sphere (ball-shaped), so you can follow practically
any route you want from one place to another.  You could even fly from
New York to Chicago by way of the north pole.

If you want to draw a smooth curve from Oslo through the north pole to
a point in the USA, that's perfectly possible.  But it's not the shortest way
to travel between those two points.

Discuss how lawmakers could use scientific knowledge to help them make decisions that would benefit society.

Answers

Scientific knowledge is very firm in its facts and pieces of evidence that create a more precise definition. If lawmakers are able to use the scientific method in making a decision, it will make a big change and will be beneficial to the society. The set of rules will be more arranged, specific and restrictive that might change justice, tax, and law.

A 92.6 kg weight-watcher wishes to climb a mountain to work off the equivalent of a large piece of chocolate cake rated at 735 (food) Calories. How high must the person climb? The acceleration due to gravity is 9.8 m/s 2 and 1 food Calorie is 103 calories. Answer in units of km.

Answers

Answer:

349 m

Explanation:

Parameters given:

Mass of climber, m = 92.6 kg

Amount of food calories = 735

1 food calorie = 103 calories

735 food calories = 75705 calories

1 joule is equal to 0.239 calories. Therefore, 75705 calories will be 316749.72 joules.

Hence, this is the amount of work the climber must do work off the food he ate.

Work done is given as:

W = Force * distance

W = m * g * h

h = W/(m * g)

h = 316749.72/(92.6 * 9.8)

h = 349 m

One plate goes under another in a _____.A. subduction zone
B. transform fault area
C. seafloor spreading zone
D. region of paleomagnetism

Answers

Answer:

Option (A)

Explanation:

Earth crust is comprised of numerous lithospheric plates. These plates constantly move over the viscous asthenosphere layer. This movement of plates is due to the convection current generated in the mantle due to the radiation of the heat from the earth's core.

This plate motion takes place in three different ways, namely

1) Convergent plate motion

2) Divergent plate motion

3) Transform plate motion

In a convergent plate motion, two plate collides with one another. Due to this collision, the denser plate gets subducted below the less denser plate forming a subduction zone. This region is also known as the Benioff zone.

Hence, the correct answer is option (A).
I believe it's a. subduction zone.

Imagine that a car is traveling from your left to your right at a constant velocity. Which two actions could the driver take that may be represented as (a) a velocity vector and an acceleration vector both pointing to the right and then (b) changing so the velocity vector points to the right and the acceleration vector points to the left?

Answers

Answer:

(a). The speed of car will increases.

(b). The speed of car will decreases.

Explanation:

Given that,

A car is traveling from your left to your right at a constant velocity.

We need to find two actions could the driver take

Using given data

(a). If the velocity and acceleration of car to the right

It means the velocity and acceleration of car is in same direction then the speed of car will increases.

(b). If the velocity to the right and the acceleration to the left

It means the velocity and acceleration of car is in opposite direction then the speed of car will decreases.

Hence, (a). The speed of car will increases.

(b). The speed of car will decreases.

What is the mass of a child if the force of gravity on the child's body is 100 N?

Answers

Gravity is 9.81m/s^2 on earth F=m×g
100N=(x)kg×9.81m/s^2
x=10.19kg or more than 22lbs
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