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4 years ago

Who described atoms as small spheres that could not be divided into anything smaller? bohr dalton rutherford thomson

Physics

2 answers:

andrew-mc [135]4 years ago

6 0

The answer is...

B-Dalton

I just took the test

Dahasolnce [82]4 years ago

3 0

John Dalton gave that description.

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Transfer of heat through conduction can occur in which of the following?

lianna [129]

Answer:d I think

Explanation:

8 0

3 years ago

Read 2 more answers

a diver on a board 7.5m above the water walks off the end with a horizontal velocity of 2.3 m/s when they hit the surface of the

m_a_m_a [10]

Answer:

2.846m

Explanation:

The diver is performing projectile motion.

To find x(final), we are going to use the equation x(final) = v(initial)*t + x(initial)

x(initial) = 0

x(final) = ?

v(initial) = 2.3 m/s

we don't know t

To find t we will use y(final) = 1/2*(-9.8)*t^2 + v(initial in the y dir.)*t + y(initial)

- 9.8 in the acceleration in the y dir.

y(final) = 0

y(initial) = 7.5

v(initial in the y dir.) = 0

If we solve for t we get: t = 1.237s

Now we have all the components to solve for x(final) in x(final) = v(initial)*t + x(initial)

x(final) = 2.3*1.237 + 0

x(final) = 2.846m

6 0

3 years ago

Help please fast + i dont want an answer from g**gle .

velikii [3]

7) 6, i believe, (Cu) 1 atom+ (S) 1 atom+(0)4 atoms.

7 0

3 years ago

An ethernet cable is 3.80 m long and has a mass of 0.210 kg. A transverse pulse is produced by plucking one end of the taut cabl

Tasya [4]

Answer:

$T=94.54N$

Explanation:

The tension in a cable is given by:

$T=\mu v^2(1)$

Where $\mu$ is the mass density of the cable and v is the speed of the cable's pulse. These values are defined as:

$\mu=\frac{m}{L}(2)\\v=\frac{d}{t}$

The pulse makes four trips down and back along the cable, so $d=4(2L)$

$v=\frac{8L}{t}(3)$

Replacing (2) and (3) in (1), we calculate the tension in the cable:

$T=\frac{m}{L}(\frac{8L}{t})^2\\T=\frac{64mL}{t^2}\\T=\frac{64(0.21kg(3.80m))}{(0.735s)^2}\\T=94.54N$

3 0

3 years ago

A motorcyclist drives from A to B with a uniform speed of 30 km/h and returns back with a speed of 20km/h-¹ find the average spe

k0ka [10]

Answer:

Average speed = 24 km/h

Explanation:

Let the distance be x.

<u>Given the following data;</u>

Uniform speed A = 30 km/h

Uniform speed B = 20 km/h

To find the average speed;

Mathematically, the average speed of an object is given by the formula;

$Average \; speed = \frac {total \; distance}{total \; time}$ ..... equation 1

Total time = TA + TB

$T_{A} = \frac {x}{30}$

$T_{B} = \frac {x}{20}$

$Total \; time = \frac {x}{30} + \frac {x}{20}$

$Total \; time = \frac {5x}{60}$

Total distance = x + x

Total distance = 2x

Substituting the values into equation 1;

$Average \; speed = \frac {2x}{\frac {5x}{60}}$

$Average \; speed = \frac {2x*60}{5x}$

$Average \; speed = \frac {120}{5}$

<em>Average speed = 24 km/h</em>

6 0

3 years ago