Answer:
Average force = 67 mn
Explanation:
Given:
Initial velocity u = 0 m/s
Final velocity v = 67 m/s
Time t = 1 ms = 0.001 sec.
Computation:
Using Momentum theory
Change in momentum = F × Δt
(v-u)/t = F × Δt
F × 0.001 = (67 - 0)/0.001
F= 67,000,000
Average force = 67 mn
Answer:
Some parts of your question is missing attached below is the missing parts and the answer provided is pertaining to your question alone
answer : -6661.59 volts
Explanation:
The total electric potential can be calculated using this relation
V = k ![(\frac{q1}{r1} + \frac{q2}{r2})](https://tex.z-dn.net/?f=%28%5Cfrac%7Bq1%7D%7Br1%7D%20%2B%20%5Cfrac%7Bq2%7D%7Br2%7D%29)
q 1 = 1.62 <em>u</em>c
r1 = 4.00 m
q2 = -5.73 <em>u</em>c
r2 = 5.00 m
k = 8.99 * 10^9 N.m^2/c^2
insert the given values into the above equation
V = ( 8.99 * 10^9 ) *
= -6661.59 volts
Answer:
B) Wattage
Explanation:
Looking at the question's statement, it is self explanatory.
"James needs a power supply that will have enough power to run the new card."
The above statement clearly says that James needs to look for the Wattage (which simply means power, because it is the unit of power).
Form factor will show only the shape and general physical layout of the power supply.
Dual Voltage option will give only the option of supplying two different voltages at a time and nothing about the power that James needs.
80 Plus Gold rating will show that efficiency of the PSU (power supply Unit) is up to 87% at 100% load.
Answer:
C) The amount of water released through the dam and the dam's height account for the potential energy
Explanation:
The gravitational potential energy of an object is given by:
![U=mgh](https://tex.z-dn.net/?f=U%3Dmgh)
where
m is the mass of the object
g is the acceleration of gravity
h is the height of the object relative to the ground
As we see from the equation, the potential energy depends on two factors related to the object:
- its mass
- its height above the ground
So for the water in the dam, its potential energy depends on
- the mass of the water (= the amount of water released)
- the height of the water (= the dam's height)
So the correct answer is
C) The amount of water released through the dam and the dam's height account for the potential energy
Answer:
32.5 m/s
Explanation:
The total momentum must be conserved before and after the collision:
![p_i = p_f\\m_c u_c + m_t u_t = m_c v_c + m_t v_t](https://tex.z-dn.net/?f=p_i%20%3D%20p_f%5C%5Cm_c%20u_c%20%2B%20m_t%20u_t%20%3D%20m_c%20v_c%20%2B%20m_t%20v_t)
where
m_c = 300 kg is the mass of the car
m_t = 600 kg is the mass of the truck
u_c = 60 m/s is the initial velocity of the car
u_t = 10 m/s is the initial velocity of the truck
v_c = 15 m/s is the final velocity of the car
v_f is the final velocity of the truck
Solving for v_f, we find:
![v_f = \frac{m_c u_c + m_t u_t - m_c v_c}{m_t}=\frac{(300 kg)(60 m/s)+(600 kg)(10 m/s)-(300 kg)(15 m/s)}{600 kg}=32.5 m/s](https://tex.z-dn.net/?f=v_f%20%3D%20%5Cfrac%7Bm_c%20u_c%20%2B%20m_t%20u_t%20-%20m_c%20v_c%7D%7Bm_t%7D%3D%5Cfrac%7B%28300%20kg%29%2860%20m%2Fs%29%2B%28600%20kg%29%2810%20m%2Fs%29-%28300%20kg%29%2815%20m%2Fs%29%7D%7B600%20kg%7D%3D32.5%20m%2Fs)