Answer: C. electricity and magnetism
Explanation:
Answer:
protons+neutrons= mass number, so if the mass number is 13 and protons are 6 its 13-6=7 neutrons
Explanation:
mass number: the sum of the number of protons and
neutrons in an atom
this is key as it explains that protons+neutrons= mass number, so if the mass number is 13 and protons are 6 its 13-6=7 neutrons
Answer: 22.01 rpm.
Explanation:
If we assume no external torques are present, the angular momentum must be conserved.
L1 = L2
I1 . ω1 = I2 ω2 (1)
I1 = MR2 /2 + m1. R2 + m2. R2 + m3. R2
I2 = MR2 /2 + m1. R2 + m3. R2
(as the 28.0 kg child moves to the center, he has no part anymore in the rotational inertia)
As I units are SI units, it is advisable to convert the angular velocity to rad/sec, as follows:
22.0 rev/min. (2π/rev) . (1min/60 sec) = 2.3 rad/sec
Solving for ω2 in (1):
ω2 = 2.31 rad/sec = 2.31 (1 rev/2 π). (60sec/1min) = 22.01 rpm
Lots. there are just so many. maybe a million since they are so tiny and they make up everything
The reason oxygen and other gasses are stored in metal cylinders is that of the simple fact it's a gas. The reasoning behind it is to safely store the gas with no leaking etc.
"The purpose of this safety policy and procedure is to establish guidelines for the protection and safety of ([COMPANY]) employees who handle and use compressed gases. Compressed gases are typically stored under pressure in metal cylinders. These cylinders are designed and constructed to withstand high pressures. Improper handling and use of compressed gases can result in devastating consequences.
This safety policy and procedure provide guidelines for the safe handling and use of compressed gases. It includes provisions for training and presents safe handling guidelines. It also presents the types, uses, inspection, and marking requirements of compressed gas cylinders. Additionally, this safety policy and procedure present transportation and storage requirements for compressed gas cylinders."
quoted answers belong to:
<span>https://www.safetyinfo.com/written-safety-programs-compressed-gas-cylinder-safety-program-free-index...
</span>
I take NO CREDIT in this answer. All quoted answers are copied from the link above, I am only here to help, not to get into trouble.
