Answer:
See Explanation
Explanation:
The relationship between angle of an incline and the acceleration of an object moving down the incline.
As the angle of an incline increases, so does the acceleration of the body moving down the incline increases, resolving the force acting on an inclined object
Parallel force = mgsin, perpendicular = mgcosΘ
With th weigh component 'mg' of the parallel force accounting for the acceleration of the body down the incline.
mgsinΘ = ma
Fnet = ma
B.) From Fnet = ma
Fnet = ma
a = Fnet / m
Where Fnet = Net force = mgsinΘ, a = acceleration
Answer:
Explanation:
= Permittivity of free space =
V = Volume of cube =
= Charge density =
Electric flux is given by
The electric flux through the surface of the cube is
Answer:
When a forming planet is big enough, it starts to clear its path around the star it orbits. ... A planet's gravity pulls equally from all sides. Gravity pulls from the center to the edges like the spokes of a bicycle wheel. This makes the overall shape of a planet a sphere, which is a three-dimensional circle.
Answer:
v₁ = 1 [m/s].
Explanation:
This problem can be solved by using the principle of conservation of linear momentum. Where momentum is conserved before and after catching the snowball.
where:
P = linear momentum [kg*m/s]
m = mass [kg]
v = velocity [m/s]
As the momentum is conserved, it will be the same as that received by the person who catches the snowball.
That is, the person who catches the snowball moves backwards with a speed of 1 [m/s].
Answer:
1. MA = 4
2. MA = 2
3. MA = 6.5
4. MA = 7
5. MA = 1.8
Effort = 152.78 N
Weight = 90 N
Explanation:
The mechanical advantage of a lever is given as:
Mechanical Advantage = MA = Effort Arm/Resistance Arm
1.
MA = 12 m/3 m
<u>MA = 4</u>
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2.
MA = 2 ft/1 ft
<u>MA = 2</u>
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3.
MA = 26 cm/ 4 cm
<u>MA = 6.5</u>
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4.
Since the resistance arm is 0.5 m and the total board length is 4 m.
Therefore:
Effort Arm = 4 m - 0.5 m = 3.5 m
MA = 3.5 m/0.5 m
<u>MA = 7</u>
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5.
Effort Arm = 4.5 m
Resistance Arm = 2.5 m
MA = 4.5 m/2.5 m
<u>MA = 1.8</u>
Another formula for mechanical advantage is:
MA = Weight/Effort
here,
Weight = 275 N
Effort = ?
Therefore,
1.8 = 275 N/ Effort
Effort = 275 N/1.8
<u>Effort = 152.78 N</u>
To lift a wooden board a 50 N force is applied. Therefore,
1.8 = Weight/50 N
Weight = 50 N * 1.8
<u>Weight = 90 N</u>
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