Rate of change of velocity is acceleration
Answer:
The specific heat of aluminum is greater.
Explanation:
It lost the most heat.
<span>The factors that are used to determine power are:
Voltage,current and the power factor.
</span><span>Power = Voltage x Current x K
Watts = Volts x Amps x Power Factor</span>
Answer:
50.4 N
Explanation:
Q1 = Q
Q2 = 4 Q
Distance = d
The force is given by
![F = \frac{KQ_{1}Q_{2}}{d^{2}}](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7BKQ_%7B1%7DQ_%7B2%7D%7D%7Bd%5E%7B2%7D%7D)
.... (1)
Now,
Q3 = 2 Q
Q4 = 7 Q
distance = d/3
![F' = \frac{9KQ_{3}Q_{4}}{d^{2}}](https://tex.z-dn.net/?f=F%27%20%3D%20%5Cfrac%7B9KQ_%7B3%7DQ_%7B4%7D%7D%7Bd%5E%7B2%7D%7D)
.... (2)
Divide equation (2) by equation (1), we get
F' / 1.60 = 126 / 4
F' = 50.4 N
Thus, the force is 50.4 N.
Explanation:
Given parameters:
Distance hopped = 84m
Displacement = 84m due east
Time = 7s
Unknown:
Speed of kangaroo = ?
Velocity of kangaroo = ?
Solution:
To solve this problem,
Speed =
=
= 12m/s
Velocity =
=
= 12m/s due east