All categories

3 years ago

A boy on a bicycle rides at 21.1m/s distance of 87.9m how long does it take

Physics

2 answers:

Svetllana [295]3 years ago

8 0

Answer is t=4,2 seconds

Due to

t=X/V

t=(87,9)/(21,1)

t=4.2 segs

Best regards

erastovalidia [21]3 years ago

7 0

4.2 seconds! Hope this helps

You might be interested in

what happens to the direction of a light wave when it passes from a less dense medium such as air into a more dense medium such

Sav [38]

When a light wave passes from a less dense medium such as air into a more dense medium such as glass, is is bent and distorted, as it has to pass through the denser atom configuration.

4 0

3 years ago

What are the different isotopes of carbon and which isotopes are relevant for carbon dating?

GuDViN [60]

Ans: Radiocarbon dating uses carbon isotopes.

Radiocarbon dating relies on the carbon isotopes carbon-14 and carbon-12. Scientists are looking for the ratio of those two isotopes in a sample. Most carbon on Earth exists as the very stable isotope carbon-12, with a very small amount as carbon-13.

3 0

3 years ago

Ohm’s Law pls answer this photos

Rudiy27

Answer:

Trial 1: 2 Volts, 0 %

Trial 2: 2.8 Volts, 0%

Trial 3: 4 Volts, 0 %

Explanation:

Th experimental values are given in the table, while the theoretical value can be found by using Ohm/s Law:

V = IR

TRIAL 1:

V = IR

V = (0.1 A)(20 Ω)

V = 2 volts

% Difference = $|\frac{Theoretical Value - Exprimental Value}{Theoretical Value}|$ x 100%

% Difference = |(2 - 2)/2| x 100%

% Difference = 0 %

TRIAL 2:

V = IR

V = (0.14 A)(20 Ω)

V = 2.8 volts

% Difference = $|\frac{Theoretical Value - Exprimental Value}{Theoretical Value}|$ x 100%

% Difference = |(2.8 - 2.8)/2.8| x 100%

% Difference = 0 %

TRIAL 3:

V = IR

V = (0.2 A)(20 Ω)

V = 4 volts

% Difference = $|\frac{Theoretical Value - Exprimental Value}{Theoretical Value}|$ x 100%

% Difference = |(4 - 4)/4| x 100%

% Difference = 0 %

7 0

4 years ago

Which statement best describes the variables in a controlled experiment?

podryga [215]

control is constant for given set of readings.

set indep var

observe dep var

6 0

3 years ago

Read 2 more answers

A 0.015 kg marble moving to the right at 0.225 m/s makes an elastic head-on collision with a 0.030 kg shooter marble moving to t

bonufazy [111]

Answer:

0.09 m/s to the right

Explanation:

The principle of conservation of linear momentum states that in a system of colliding objects, the total momentum before collision is equal to the total momentum after collision, provided there is no external force.

The total momentum, in this question, is the sum of the momentum of the the two marbles. We assume velocity to the right is positive while to the left is negative. Thus, total initial momentum is

$P_i = 0.015\times0.225+ 0.030 \times(-0.180) = 0.002025$