Answer:
4km/hr
Explanation:
There are 60 minute in an hour. If you divided 60 by 30 minutes you’d get 2. 2x 2km is 4km and 30x 2 is 60/an hour
Answer:
Electric Field intensity is zero.
The reason for that is:
All charges are placed at equal distances from the center of the square and have same magnitude and sign. This means they will exert equal and opposite forces on the test charge at the center. Net force will become Zero.
Answer: Squats and leg lifts
Explanation:
They strengthen your legs!
C = 200 j/g*C
m = 2g
ΔT = 55 - 35 = 20C
Heat = mcΔT = 2 * 200 * 20 = 8000J = 8kJ
