All categories

4 years ago

PLEASE HELP ASAP WILL GIVE BRAINLIEST!!!!!!!!!!!!!

Physics

2 answers:

Stolb23 [73]4 years ago

8 0

A change internal energy work to be done and heat to flow into the system

Natali [406]4 years ago

6 0

A change in internal energy causes work to be done and heat to flow into the system

You might be interested in

A woman starts to swim directly across a 5.2-km-wide river. Her speed with respect to the water is 1.9 m/s. The river current ca

elena-14-01-66 [18.8K]

Answer:

(a) the time needs for her to cross the river is 2736.8 s.

(b) the distance takes to reach the other side of the river is 2490.5 m.

Explanation:

given information:

woman's speed, v₁ = 1.9 m/s

the wide of river, s = 5.2 km = 5200 m

river's current, v₂ = 0.91 m/s

(a) How much time does it take her to cross the river?

s = v t

s = the displacement (m)

v = speed (m/s)

t = time (s)

s = v t

t = s/v

= 5200/1.9

= 2736.8 s

(b) How far downstream will the river carry her by the time she reaches the other side of the river?

s = v t

= (0.91) (2736.8)

= 2490.5 m

8 0

3 years ago

Convert:<br> 1) 2kg into gram<br> 2) 5200m into km<br> 3) 20cm into m

aivan3 [116]

1) 2 kilograms converted into grams is 2000

2) 5200 meters converted into kilometers is 5.2

3) 20 centimeters converted into meters is 0.2

8 0

3 years ago

A centrifuge rotates so that 0. 25 m from the center is traveling at 343 m/s (the speed of sound). How many RPM is this? What is

andrew-mc [135]

Answer:

[13,101 RPM]

[1372 rad/s]

Explanation:

8 0

2 years ago

________ states that the number of transistors per square inch on an integrated chip doubles every 18 months.

Andrew [12]

Answer:

Moore's Law

Explanation:

5 0

4 years ago

A potential difference of 15 V produces a current of 0.60 amps in a piece of copper wire. What is the resistance of the wire?

ale4655 [162]

Answer:

R = 25 Ohms

Explanation:

Given the following data;

Voltage (p.d) = 15 V

Current = 0.6 A

To find the resistance of the wire;

Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.

Mathematically, Ohm's law is given by the formula;

$V = IR$

Where;

V represents voltage measured in voltage.

I represents current measured in amperes.

R represents resistance measured in ohms.

$R = \frac {V}{I}$

Substituting into the equation, we have;

$R = \frac {15}{0.6}$

R = 25 Ohms

8 0

3 years ago