Answer:
We need to multiply 12 to each term to eliminate fractions.
Explanation:
Given expression:
To eliminate the fraction we need to multiply each term by least common multiple of the denominators of the fraction.
The denominators in the above expressions are:
4, 3 and 2
The multiples of each can be listed below.
2⇒ 2,4,6,8,10,<u>12</u>,14,16.....
3⇒ 3,6,9,<u>12</u>,15,18
4⇒ 4,8,<u>12</u>.......
From the list of the multiples stated, we can see the least common multiple is 12.
So we will multiply each term by 12.
Multiplying 12 to both sides.
Using distribution,
Thus we successfully eliminated the fractions.
Answer:
61578948 m/s
Explanation:
λ
= λ
687 = 570 
= 61578948 m/s
So Slick Willy was travelling at a speed of 61578948 m/s to observe this.
It would be 17 m/s
If we use
V2 = V1 + a*t
Sub in 5 for v1
2m/s*2 for a
And
6 for t
That should give you the answer.
b) Equal to 243 N.
Explanation:
The total force acting on the car in the opposite direction including the road friction and air resistance is equal to 243 N.
This is in conformity with newton's third law of motion.
Newton's third law of motion states that "action and reaction are equal and opposite in direction. "
- The action force is that of the pull by Harry acting on the car.
- The reaction force is in the opposite direction.
- Both action and reaction force equal and opposite and magnitude and direction
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Answer:
option (b)
Explanation:
According to the Pascal's law
F / A = f / a
Where, F is the force on ram, A be the area of ram, f be the force on plunger and a be the area of plunger.
Diameter of ram, D = 20 cm, R = 20 / 2 = 10 cm
A = π R^2 = π x 100 cm^2
F = 3 tons = 3000 kgf
diameter of plunger, d = 3 cm, r = 1.5 cm
a = π x 2.25 cm^2
Use Pascal's law
3000 / π x 100 = f / π x 2.25
f = 67.5 Kgf
