Answer:
what do you mean ???????????
Answer:
Attraction.
Explanation:
Charging by friction involves rubbing of objects against one another so that one loses electron(s), while the other gains the electron(s). Thus, the objects would have opposite charges after the process.
The glass test tube rubbed with silk loses electron, thus becomes positively charged. While the acrylic rob rubbed with paper towel becomes negatively charged. Since the two rods have opposite charges, then the interaction between them would be attraction. A force of attraction between the rods would be experienced while the rods are brought to a required close range.
Explanation:
It is given that,
Initial velocity of frog, u = 100 m/s
It jumps at an angle of 60 degrees.
(a) Let are the x and y components of velocity. It can be calculated as :
(b) Let y is the maximum height reached by the frog. It can be calculated using the third equation of motion as :
At maximum height,
and a = -g
y = 382.63 meters
(c) Let t is the time taken by the frog to reach its maximum height. It can be calculated as :
t = 8.83 seconds
Hence, this is the required solution.
Answer:
m=F/a
= 44/4
= 11 m
Explanation:
Just use the formula F=ma
Answer: 0.076 m/s
Explanation:
Momentum is conserved:
m v = (m + M) V
(0.111 kg) (55 m/s) = (0.111 kg + 80. kg) V
V = 0.076 m/s
After catching the puck, the goalie slides at 0.076 m/s.