Answer:
the second one Test the rate of decay of specific elements in rock samples.
Answer:
She is not getting a good deal.
Explanation:
The equation that relates heat with mass, specific heat and temperature change of an object is
.
Always convert temperature to Kelvin, although in our case it's not necessary because the
will be the same, and we will leave the mass in grams because we will be getting
units for specific heat, which we can compare to the one given for gold.
We then calculate the specific heat of the object in question:

Which shows it's not gold.
Answer:
Their velocity is 0m/s because the first box was only 10 kg and the second box was double the weight
Answer:
When touching the bar magnet ,the nail gets attached to the magnet from its metallic field is used to connect when taylor touched the nail to the bar magnet,the magnetic fields were ranged,and made a temporary magnet.
Explanation:
Answer:
f = c / λ
Explanation:
Electromagnetic waves are types of periodic waves. They propagate with the same speed as light (3 * 10⁸ m/sec).
Therefore:
velocity of wave = c
Now, the equation that relates speed of wave and its frequency is as follows:
c = λf
where:
c is the speed of wave
f is the frequency of the wave
λ is the wavelength of the wave
Solve the above equation for frequency, we will end up with:
f = c / λ