1. Two point charges, equal amounts of
charge in absolute
value
2,5 C and opposite
in sign, are in the air
at a distance of 10
cm from each other.
How big is it
the intensity of the
electrostatic force
with which these two
point charges act on
each other?
Comment on the
sign of force.

Can someone help me pls​

What is a subatomic particle with a negative charge and very little mass?

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?

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