What is the density of an object that has a mass of 30 g and a volume of 20cm cubed/ to the third power?

Talja [164]

Answer:

$v=\dfrac{1200}{t}\ m/s$

Explanation:

Given that,

The car traveled a total of 1,200 meters during this test.

We need to find the average speed of the car. The average speed of the car is given by total distance covered divided by the time taken. So,

$v=\dfrac{1200}{t}\ m/s$

But putting the value of t we can find the average speed of the car.

3 0

3 years ago

. What is the energy of an object if the height is 20 m and the mass is 2kg?

navik [9.2K]

The kinetic energy of the object is 392 Joules.

6 0

2 years ago

Help hurry help pls it’s timed

Jobisdone [24]

Answer:

its the teal/second from the left one

Explanation:

4 0

2 years ago

Read 2 more answers

Review. A light spring of force constant 3.85 N/m is compressed by 8.00 cm and held between a 0.250-kg block on the left and a 0

vivado [14]

The spring exerts on each block an outward force of magnitude

$\left|\mathrm{F}_{\mathrm{s}}\right|=\mathrm{kx}=(3.85 \mathrm{~N} / \mathrm{m})(0.08 \mathrm{~m})=0.308 \mathrm{~N}$

$Take the $+\mathrm{x}$ direction to the right. For the light block on the left, the vertical forces are given by$

$\mathrm{F}_{\mathrm{g}}=\mathrm{mg}=(0.250 \mathrm{~kg})\left(9.80 \mathrm{~m} / \mathrm{s}^2\right)=2.45 \mathrm{~N}$$ \\and \ $\sum \mathrm{F}_{\mathrm{y}}=0$so $\mathrm{n}-2.45 \mathrm{~N}=0 \rightarrow \mathrm{n}=2.45 \mathrm{~N}$ \\Similarly, for the heavier block,$

$\mathrm{n}=\mathrm{F}_{\mathrm{g}}=(0.500 \mathrm{~kg})\left(9.80 \mathrm{~m} / \mathrm{s}^2\right)=4.90 \mathrm{~N}$

$\begin{aligned}&\sum F_x=m a_x:-0.308 \mathrm{~N}=(0.250 \mathrm{~kg}) \mathrm{a} \\&\mathrm{a}=-1.23 \mathrm{~m} / \mathrm{s}^2\end{aligned}$$\\\\$$ For the heavier block, \\$$+0.308 \mathrm{~N}=(0.500 \mathrm{~kg}) \mathrm{a}$$$$\mathrm{a}=0.616 \mathrm{~m} / \mathrm{s}^2$

<h3>What is kinetic energy?</h3>

The kinetic energy is the energy that it possesses due to its motion.

To accelerate an object, we need to apply force. To apply force, we have to be compelled to do work. When work is done on an object, energy is exchanged, and the object moves with a unused steady speed. We call the energy that's exchanged kinetic energy, and it depends on the mass and speed accomplished.

Kinetic energy is a scalar quantity, it is entirely described by magnitude

To learn more about kinetic energy , visit:

brainly.com/question/11592500

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7 0

1 year ago

Because global temperatures are , some species are seeking out elevations in the Himalayas to colonize. Scientists were worried

Umnica [9.8K]

Answer:

If 40 is increased to 56, what is the percent of change?

40%

71%

29%

80%

Explanation:

If 40 is increased to 56, what is the percent of change?

40%

71%

29%