Evidence of Chemical Change:
A car rusting
Leaves changing in October
The glow of a light bulb
A white cloudy substance occurs after mixing two substances
Burning toasts
A candle being lit
Evidence of Physical Change:
Water boiling
Yellow and blue paints mixed together
Wax melting
Crushing a rock with a hammer
Hope this helps!
Have a great day!
The correct answer to the question is by increasing their masses, or by decreasing the separation distance between them.
EXPLANATION:
Let us consider two bodies having masses M and M' respectively . The two bodies are separated from their centre of masses by a distance of R.
As per Newton's law of gravitation, the two bodies will exert gravitational force on one another. The gravitational force produced between them is calculated as -
Gravitational force
Here, G is the gravitational force constant.
From above, we see that the gravitational force is directly proportional to the product of masses of two bodies and inversely proportional to the square of separation distance between them.
Hence, the gravitational force between two objects can be increased by increasing their masses, or by decreasing the distance between them.
Answer:
80 times 12=960
Explanation:
You have to do the equation for work, the equation is work= force times distance, the force here is 80newtons, the distance is 12meters, so you would do 80 times 12 to get your answer of 960
What you need to do here is a little bit of research, namely into what smartphones are made of. Once you find each component, you can find out what elements are in each component, and from there simply find whatever elements are not radioactive.