Electrical resistance is measured ina.
volts.
b.
joules.
c.
watts.
d.
amperes.
e.
none of the above

Answers

Answer 1

Answer: Resistance is the ratio of

(voltage between two points in the circuit)
divided by
(current between the same points).

It's expressed in units of Ohms, so the correct choice is "none of the above".

Answer 2

Answer: It's e. none of the above because electrical resistance is measured in ohms.

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Two shoes each have a mass of 0.1 kg. if the are .15m apart what is the gravitational force between them? G = 6.67 x 10^-11 N (m/kg)^2

Answers

Formula:

$F = G \cdot (m_1 m_2)/(r^2)$

m1, m2 - mass in kg
r - distance in meter.

m1 = m2 = 0.1kg
r = 15m

$F = 6.67 \cdot 10^(-11) N \cdot (m^2)/(kg^2) \cdot (0.1 \cdot 0.1 kg^2)/(15^2 m^2) \n \n F=(6.67 \cdot 0.01 \cdot 10^(-11))/(225) N \n \n F \approx 0.00002964 \cdot 10^(-11) N \n \n F \approx 2.96 \cdot 10^(-16) N$

Greetining

Answer:

the answer is =2.96 x10^-11 N

Explanation:

A 100-meter sprint is a race using only the straight side of a racetrack. A 400-meter sprint is a race that makes one complete lap around a racetrack. Why are velocity and speed the same for a 100-m sprint but not a 400-m sprint?

Answers

Speed is a scalar quantity (meaning it can be measured using a single number that represents the amount), while velocity is composed of the scalar quantity plus the direction. As the 100-meter sprint only takes place in one direction, the speed and velocity for this is just the same. For the 400-meter sprint however, the direction of your speed changes as you turn for her curved part of the race. Therefore, a direction change is happening.

Sample response on Edu is:

In the 100-m sprint, the displacement is 100 meters and the distance is 100 meters. This means speed and velocity are the same for the 100-m sprint. In the 400-m sprint, the distance is 400-m, but the runners stop at the same place they start so the displacement is zero. Zero displacement means zero velocity.

The term used to describe the quantity of matter that a body possesses is

Answers

The body mass index.

The term used to describe the quantity of matter that a body possesses is mass.

A skier starting from rest accelerates in a straight line down a 43,000 m slope at 1 m/s. How fast were they moving after 5 s?

Answers

Answer:

5m/s

Explanation:

The skier accelerates at 1 m/s, then, the acceleration is:

$a=1(m)/(s^2)$

to find the speed after 5 seconds you use the following formula:

$a=(v-v_o)/(t)$

but vo = 0m/s because the skier is at rest at the beginning.

You do v the subject of the formula:

$v=at=(1(m)/(s^2))(5s)=5(m)/(s)$

hence, the velocity is 5m/s

Water _____.a. has a pH value of 0
B: expands when it freezes
C: is less dense than ice
D: dissolves in most substances

Answers

Water does not have a pH of 0, its actually 7. Also, it is not less dense than ice. Lastly, it does not dissolve in most substances, its the complete opposite. As its a solvent, not a solute.

Answer: B

Select all of the answers that apply.Thermohaline circulation is driven by _____.
density
salinity
temperature
wind
Coriolis effect

Answers

The correct answer for the question that is being presented above is this one: "density, salinity, temperature." Movement of deep ocean water driven by differences in temperature, salinity, and density cause the Thermohaline circulation. Thermohaline circulation is a part of the large-scale ocean circulation that is driven by global density gradients created by surface heat and freshwater fluxes.

Final answer:

Thermohaline circulation is driven by density, salinity, and temperature. These factors cause changes in the water's density, leading to the creation of ocean currents.

Explanation:

Thermohaline circulation is primarily driven by density, salinity, and temperature. Salinity and temperature affect the density of ocean water, with higher salinity and lower temperature leading to a denser substance. When water in an area of the ocean becomes denser than the surrounding water, it sinks, creating a current. This process is global, meaning it involves the entire ocean system and thus is an essential part of Earth's climate.