A vector is a quantity or phenomenon that has two independent properties: magnitude and direction.
Answer:
I think it’s the third one
Explanation:
When you run, your body has a kinetic energy and when you fall while running, the friction between the carpet and your foot, transforms the kinetic energy into thermal energy or heat energy. This can even cause, real burn if the skin were too hot.
Answer:
The heat capacity of a sample is 37.7 J/K.
Explanation:
Given that,
Submerged temperature of tissue sample = 275 K
Mass of liquid nitrogen= 2 kg
Temperature = 70 K
Final temperature = 75 K
We need to calculate the heat
Using formula of heat
![Q=mc(T_{f}-T_{i})](https://tex.z-dn.net/?f=Q%3Dmc%28T_%7Bf%7D-T_%7Bi%7D%29)
Put the value into the formula
![Q=2\times1.039\times10^{3}\times(75-70)](https://tex.z-dn.net/?f=Q%3D2%5Ctimes1.039%5Ctimes10%5E%7B3%7D%5Ctimes%2875-70%29)
![Q=10390\ J](https://tex.z-dn.net/?f=Q%3D10390%5C%20J)
We need to calculate the heat capacity of a sample
Using formula of heat capacity
![\Delta S=\dfrac{Q}{T}](https://tex.z-dn.net/?f=%5CDelta%20S%3D%5Cdfrac%7BQ%7D%7BT%7D)
Put the value into the formula
![\Delta S=\dfrac{10390}{275}](https://tex.z-dn.net/?f=%5CDelta%20S%3D%5Cdfrac%7B10390%7D%7B275%7D)
![\Delta S=37.7\ J/K](https://tex.z-dn.net/?f=%5CDelta%20S%3D37.7%5C%20J%2FK)
Hence, The heat capacity of a sample is 37.7 J/K.
Answer:
intensity of the light (the energy per unit area per unit time)
Explanation:
- The photoflash capacitor is an electrolytic capacitor that is also used in flash cameras, professional illumination and solid-state laser supply. Their general purpose is to briefly power a high-voltage flash tube, which can be used to illuminate photographic material or to alternately pump a laser rod.
- Since the flash tube requires very little time to operate, photoflash capacitors are designed to supply high discharge current pulses without excessive internal heating.