Answer:
Option d) can not be determined from the given information
Explanation:
Water is a polar molecule consisting of 2 positive hydrogen atoms and a negative oxygen atom.
When a stream of water is deflected by positively charged object, the water molecules are oriented in such a way that oxygen in water, being negatively charge gets attracted to the charged object and aligns near the object whereas hydrogen aligns on the opposite side overcoming the inter-atomic repulsion.
Similar is the case with hydrogen in case the object is negatively charged.
Therefore, it explains that water is a polar molecule and gets attracted to both positive and negative charges and hence, the sign of the object can not be determined.
Answer: 3.3 x 10^-28 J
Explanation: just answered on a quiz!! :)
solution:
Weight of bucket = 10kg
Length or distance =14m
Weight of rope=0.5kg/m
At any point x of the rope,
=(0.5)(14-x)
=(7-0.5x)
Since the water finishes draining at 14m level and total weight of water is 42kg
Total mass=(7-0.5x)+(42-3x)+10=(59-3.5x)kg
Force=(9.8)(59-3.5x)
Explanation:
a) F = GmM / r²
F = (6.67×10⁻¹¹) (500) (5.98×10²⁴) / (6.4×10⁶ + 1.5×10⁶)²
F = 3200 N
b) F = ma
3200 = 500a
a = 6.4 m/s²
c) a = v² / r
640 = v² / (6.4×10⁶ + 1.5×10⁶)
v = 7100 m/s
A: w=mg w=13(9.8) w= 127.4
B: 13kg
C: w=mg w=13(1.6) w= 20.8
D: The force of gravity is less on the moon than on earth therefore making the dog weigh less.
