All categories

2 years ago

There are seven fundamental quantities in physics. true or false

Physics

1 answer:

Gemiola [76]2 years ago

6 0

Answer:

True

Explanation:

mass, length, time, electric current, temperature, luminous intensity and amount of substance

You might be interested in

During an earthquake, you should do all of the following EXCEPT _________________________.

Nady [450]

The key word is "electric". If the power goes out during an earthquake, items that run on electricity won't help you any. You need battery-operated radios and flashlights, as well as extra batteries.
What are your answer choices?

6 0

2 years ago

Read 2 more answers

Does the magnetic field- due to the current carrying wire- curve in a clockwise or counter-clockwise direction in the area betwe

Sauron [17]

The direction would be dependent on the direction of the current through the circuit. But for this, you can use the right hand rule to determine the direction of the magnetic field. The right hand rule states that: to determine the direction of the magnetic force on a positive moving charge, ƒ, point the thumb of the right hand in the direction of v, the fingers in the direction of B, and a perpendicular to the palm points in the direction of F.

7 0

2 years ago

two girls drag a bag across the floor. One girl exerts a force of 10 newtons and the other girl a force of 30 Newton's in the sa

lara [203]

Answer:

Explanation:

The resultant would be a combination of the two forces. We need to add them together since they are exerting a force in the same direction.

10+30= 40 N of force

5 0

2 years ago

A long-distance runner is running at a constant speed of 5 m/s.

vivado [14]

Answer:

3.33 minutes (3 minutes and 20 seconds)

Explanation:

Speed of the runner = s = 5 m/s

We need to calculate how will it take for runner to complete 1 km. We have the speed, the distance and we need to find the time. Before performing any calculations, we must convert the values to same units.

Speed is in m/s and distance is in kilometers. So we have to either convert speed to km/s or distance into meters. In this case, converting distance into meters would be a convenient option.

1 kilo meters = 1000 meters

The distance, speed and time are related by the equation:

Distance = Speed x Time

So,

Time = Distance/Speed

Using the values, we get:

t = 1000/5

t = 200 seconds

This means, the runner can complete 1 kilometers in 200 seconds. Since, there are 60 seconds in a minute, we can convert this time to minutes, by dividing it by 60. i.e.

$200 \text{ sec} = \frac{200}{60} \text{ min} = 3.33 \text{ min}$

Thus, it will take the runner 3.33 minutes (3 minutes and 20 seconds) to travel 1 km.

3 0

2 years ago

When you stand on tiptoes on a bathroom scale, there is an increase in

pychu [463]

Answer:

B) Pressure on the scale, not registered as weight.

Explanation:

This is because energy (derived from weight) becomes compiled on the tips of your toes, and therefore does not increase your weight, but simply the pressure at a smaller point

3 0

2 years ago

There are seven fundamental quantities in physics. true or false​

There are seven fundamental quantities in physics. true or false