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2 years ago

In regards to bacteria, which is true:

Physics

2 answers:

kondaur [170]2 years ago

8 0

Answer:

c. it will grow rapidly in the danger zone (between 41 and 135 degrees)

Explanation:

THe danger zone is what the food industry calls to a range of temperature that goes from 41-135 degrees in which bacteria grows exponentially more than in cooler or hotter temperatures, this creates a great environment for bacteria to reproduce, this is the only sentence that is correct, since bacteria can grow in exreme temperatures, above and below the danger zone but it just wont do it as fast.

drek231 [11]2 years ago

7 0

i think the options maybe will be between c and d

but then again if it is super hot or super cold maybe bacteria wont grow but then im sry im not really sure about the answer. hope this helps

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What are non-contact forces please include example in your answer

Alina [70]

Answer:

Gravitational force. Magnetic force. Electrostatics. Nuclear force.

Explanation:

Apple falling from a tree

raindrops falling from the sky

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3 years ago

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A rabbit runs 28 m toward the left in 9 s; then the rabbit suddenly changes direction and runs 18 m toward the right in the next

Viefleur [7K]

Answer:

The answer is 3.111111.

Explanation:

It runs 28 m in the first 9 s, and 28 divided by 9 equals 3.1 and the one goes on forever.

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2 years ago

Which statement best describes the importance of joints in the roadways of Bridges ?

Sergeeva-Olga [200]

Answer:

c. Joints allow the roadway to expand and contract as cars put force on the bridge

Explanation:

The reasons why joints are allowed on roadway is to accommodate the contraction and expansion of the road as cars put force on them.

Most materials used in making roadways are susceptible to expansion and contraction.
When a measure of force is applied their length either increases or decreases depending on the type of force.
To accommodate these changes, joints are placed in roadways

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3 years ago

Water boiling<br><br> Which one is shown? (Look at pic)

Mkey [24]

Answer:

conduction.

Explanation:

Hoped I helped! Im Eve btw have a great day and consider marking this brainliest if you do thank you in advanced!

4 0

3 years ago

The masses of blocks A and B are 20kg and 10kg, respectively. The blocks are initially at rest on the floor and are connecte by

Goryan [66]

Answer

mass of the block A = 20 Kg

mass of block B = 10 Kg

acceleration of Block A = ?

acceleration of Block B = ?

Assuming the magnitude of force = 124 N

Applying newton's second law

F = 2 T

T = F/2

now, Tension in the string =

T = 124/2 = 62 N

Weight of the block A

W = m₁ g

W = 20 x 9.8 = 196 N

Weight of the block B

W = m₂ g

W = 10 x 9.8

W = 98 N

Weight of blocks is greater than force applied by the pulley so, the blocks will not move.

Hence, acceleration of the block A and B = 0 m/s²

If the Force magnitude is increased to 294 N

T = F/2 = 294/2 = 147 N

Since this Force is less than Weight A acceleration of the block A = 0 m/s².

For Block B

Tension is more than Weight hence block will move

Net Force = 147 - 98 = 49 N

acceleration = $\dfrac{F}{m}$

$a = \dfrac{49}{10}$

a = 4.9 m/s²

8 0

2 years ago