The intensity of radioactive sample is commonly measured using a(n) _____.

Answers

Answer 1

Answer: a gieger counter is used

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Name the device which measure distance travelled by the body
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A circus performer is shot out of a cannon at a 50° angle. He reaches a height of 25m. What was the initial velocity?a. How long will he fly before he hits the safety net set at ground level with a hole underneath it. (The circus wanted it to look like he was going to hit the ground and then he bounces, for the thrill effect)

Answers

Answer:

28.9 m/s

4.52 s

Explanation:

Given in the y direction:

s = 25 m

u = U sin 50°

v = 0 m/s

a = -9.8 m/s²

Find: U

v² = u² + 2as

0² = (U sin 50°)² + 2 (-9.8) (25)

U = 28.9 m/s

Given in the y direction:

s = 0 m

u = 28.9 sin 50° = 22.1 m/s

a = -9.8 m/s²

Find: t

s = ut + ½ at²

0 = (22.1) t + ½ (-9.8) t²

t = 4.52 s

You are standing 100 Meters away from your car when an alligator appears 20meters away from you on the opposite side and you start to run with a speed of 5m/s while the alligator's speed was 8m/s towards you. Will you reach your car before the alligator reaches you? Why?

Answers

Pretty sure you'd be a dead man. Let's break this up shall we?

So if you're running @ 5 m/s at a distance of 100m, then it'll take you 20 seconds to get to the car. This is because distance/velocity=time. ••••• Now the Alligator is another story. He has to run 20m+100m and he runs @ 8 m/s. Using the same equation again, d/v= time, you will find that it takes the alligator 15 seconds to get to your car. So if it takes 20 secs for you to get to safety, and 15 secs for the alligator to maul you, if say you would die.

The gas-phase reaction between nitrogen and oxygen was carried out in a device designed to maintain constant pressure. There are two cylinders of equal volume with a reaction arrow between them. The cylinder on the left has two molecules of O 2 and two molecules of N 2. The cylinder on the right has four molecules of N O. A constant pressure is applied to both cylinders Write the balanced chemical equation for the reaction between nitrogen oxygen. Include physical states.

Answers

The balanced chemicalequation for the reaction between nitrogen and oxygen is:

2N₂(g) + 2O₂(g) —> 4NO(g)

The equation between nitrogen and oxygen can be written as follow:

N₂(g) + O₂(g) —> NO(g)

The above equation can be balance as illustrated below:

There are 2 atoms of O on the left side and 1atom on the right side. It can be balance by writing 2 before NO as shown below:

N₂(g) + O₂(g) —> 2NO(g)

Multiply the equation by 2, we have:

2N₂(g) + 2O₂(g) —> 4NO(g)

The equation is balanced!

Learn more: brainly.com/question/2399130

Answer:

2N₂(g) + 2O₂(g) ----> 2NO(g)

Explanation:

Gaseous nitrogen and gaseous oxygen reacts in a molar volume ratio of 1 : 1 to produce nitrogen (ii) oxide.

In the reaction, two molecules of nitrogen gas combines with two molecules of oxygen gas in the cylinder to form two molecules of nitrogen (ii) oxide. The equation of the reaction is given below:

2N₂(g) + 2O₂(g) ----> 2NO(g)

Nitrogen (ii) oxide is formed naturally during lightning bolts. The heat released the lightning flashes causes the nitrogen and oxygen in air to combine to form nitrogen (ii) oxide. The nitrogen (ii) oxide formed however, quickly reacts with more oxygen to form nitrogen(ii) oxide.

Nitrogen (ii) oxide is a colorless, poisonous gas. It is slightly denser than air and almost insoluble in water. it is also neutral to litmus.

An arch carries the thrust of weight to its _____(1)______. With a _____(2)______, the horizontal part of the structure supports all the weight above it.a. (1) center; (2) post-and-bearing
b. (1) base; (2) springing line
c. (1) keystone; (2) groin vault
d. (1) sides; (2) post-and-lintel

Answers

Arch Carries the thrust of Weight - Option D

An arch carries the thrust of weight to its sides. With a post-and-lintel, the horizontal part of the structure supports all the weight above it. The reason is that the post and lintel is a system of construction. In this the powerful parallel components are kept up by powerful upward components that has large cavities between them.

Therefore, an arch carries the thrust of weight to its sides for balancing purposes.

D- i just took the test

Difference between impulse and impulsive force

Answers

Impulse is caused by a force during a specific time that is equal to the body's change of momentum
Impulsive force: the process of minimizing an impact force can be approched

An impulsive force would be, say, a punch. Something that lasts a short time.An impulse can, I guess, be anything that lasts for a short time. Such as a sound impulse, say when a door slams shut.

An object is 6.0cm in front of a converging lens with a focal length of 10cm .Part A
Use ray tracing to determine the location of the image.
Express your answer using two significant figures.
q =
Part B
Is the image upright or inverted?
Part C
Is the image real or virtual?

Answers

Answer: A) see attach file .

B) the iamgen is uprigth

C) the imagen is virtual

Explanation: see attach file.

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Is work done if you carry a book across the room at a constant velocity?a. No, the force applied is parallel to the direction of motion.b. Yes, the force applied is parallel to the direction of motion.c. No, the force applied is perpendicular to the direction of motion.d. Yes, the force applied is perpendicular to the direction of motion.

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