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VARVARA [1.3K]
3 years ago
8

Bacterial cells are microscopic. What do you think has happened so that after only a few days we can see a colony of bacteria on

agar without a microscope??? - Neeed HELP WITH THE ANSWER ASAP
Physics
1 answer:
wariber [46]3 years ago
5 0
The startling answer is:

The bacteria ate the agar and reproduced (made more bacteria). There are so many of them now that you can see the blob of them.
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A man with mass 82 kg runs at a speed of 2.8 ms How much kinetic energy does he have?? A.114.8 B.221.8 C.321.4 D.642.9
Delvig [45]
Use the formula for kinetic energy.
KE=1/2mv^2
KE=1/2*(82kg)*(2.8m/s)^2
KE=321.4 J
The answer is C
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3 years ago
Which of the following statements are true? Check all that apply. Check all that apply. The gravitational force between two obje
Keith_Richards [23]

Gravitational Force Between 2 objects

5 0
3 years ago
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Someone please help with this
SSSSS [86.1K]

Answer:

<em>The new force is 2/3 of the original force</em>

Explanation:

<u>Coulomb's Law </u>

The electrical force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between the two objects.

Written as a formula:

\displaystyle F=k\frac{q_1q_2}{d^2}

Where:

k=9\cdot 10^9\ N.m^2/c^2

q1, q2 = the objects' charge

d= The distance between the objects

Suppose the first charge is doubled (2q1) and the second charge is one-third of the original charge (q2/3). Now the force is:

\displaystyle F'=k\frac{2q_1*q_2/3}{d^2}

Factoring out 2/3:

\displaystyle F'=\frac{2}{3}k\frac{q_1*q_2}{d^2}

Substituting the original force:

F'=\frac{2}{3}F

The new force is 2/3 of the original force

7 0
3 years ago
A small object is attached to a horizontal spring and set in simple harmonic motion with amplitude A and period T. How long does
Lunna [17]

Answer:

1.5T

Explanation:

Since, the amplitude of SHM is A. So, in one time period T the object will travel travel a distance of 4A.

6A-4A= 2A.

Now, this 2A distance must be traveled in T/2 time period.

So, the total time taken to travel a distance of 6A is T+T/2 = 3T/2 = 1.5T

6 0
3 years ago
Which statement describes an example of static electricity?
r-ruslan [8.4K]

Answer:a

Explanation:

7 0
3 years ago
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