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2 years ago

Identify the units NOT used when finding the density? 1. Length 2. Volume 3. Mass

Physics

2 answers:

sammy [17]2 years ago

6 0

Length is not used because the volume and mass are

Lubov Fominskaja [6]2 years ago

3 0

Length is not used. Mass and volume are used

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A cyclist must travel 800 kilometers. How many days will the trip take if the cyclist travels at an average speed of 16 km/h

Sloan [31]

Answer:

2 days 2 hours or 50 hours

Explanation:

800/16=50

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2 years ago

What is the difference between forming a hypothesis and making a prediction based on the hypothesis?

Alexus [3.1K]

Answer:

While a hypothesis is a guess that is predominantly used in science, a prediction is a guess that is mostly accepted out of science. A hypothesis is otherwise known as a good or intelligent guess. ... Moreover, hypotheses are testable guesses about the things that you'd expect to take place in your research study.

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3 years ago

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The resistivity of gold is 2.44 × 10-8 Ω · m at room temperature. A gold wire that is 1.8 mm in diameter and 11 cm long carries

tester [92]

Power in a wire where current is flowing can be calculated from the product of the square of the current and the resistance. Resistance is equal to the product of resistivity and length divided by the area of the wire. We do as follows:

Resistance = 2.44 × 10-8 ( 0.11) / (π)(0.0009)^2 = 1.055x10^-3 Ω

P = I^2R = .170^2 (1.055x10^-3 ) = 3.048x10^-5 W

6 0

3 years ago

What is kinematics? explain!!~ thankyou ~

Hatshy [7]

Answer:

Kinematics:-

Branch of mechanics concerned
Features of motion in an object
Causes and effects of motions

Hope it helps!

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2 years ago

Read 2 more answers

A car is moving in uniform circular motion. If the cars speed were to double to keep the car moving with the same radius the acc

Stells [14]

Answer:

The centripetal acceleration would increase by a factor of 4

Correct choice: B.

Explanation:

Circular Motion

The circular motion is described when an object rotates about a fixed point called center. The distance from the object to the center is the radius. There are other magnitudes in the circular motion like the angular speed, tangent speed, and centripetal acceleration. The formulas are:

$v_t=w\ r$

$\displaystyle a_c=\frac{v_t^2}{r}$

If the speed is doubled and the radius is the same, then

$\displaystyle a_c=\frac{(2v_t)^2}{r}$

$\displaystyle a_c=4\frac{v_t^2}{r}$

The centripetal acceleration would increase by a factor of 4

Correct choice: B.

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3 years ago