It is definitely an apple. I would know because i am a musician
Explanation:
In physics, work is the energy transferred to or from an object via the application of force along a displacement. In its simplest form, it is often represented as the product of force and displacement. A force is said to do positive work if (when applied) it has a component in the direction of the displacement of the point of application. A force does negative work if it has a component opposite to the direction of the displacement at the point of application of the force.
Quick Facts: Common symbols, SI unit ...
Work
A baseball pitcher does positive work on the ball by applying a force to it over the distance it moves while in his grip.
Common symbols
W
SI unit
joule (J)
Other units
Foot-pound, Erg
In SI base units
1 kg⋅m2⋅s−2
Derivations from
other quantities
W = F ⋅ s
W = τ θ
Dimension
M L2 T−2
Close
For example, when a ball is held above the ground and then dropped, the work done by the gravitational force on the ball as it falls is equal to the weight of the ball (a force) multiplied by the distance to the ground (a displacement). When the force F is constant and the angle between the force and the displacement s is θ, then the work done is given by:
{\displaystyle W=Fs\cos {\theta }}{\displaystyle W=Fs\cos {\theta }}
Work is a scalar quantity, so it has only magnitude and no direction. Work transfers energy from one place to another, or one form to another. The SI unit of work is the joule (J), the same unit as for energy.
Answer:
The magnitude of displacement is 0.082m
Explanation:
While the ball is in motion,we have MV + mv= 0 ...eq1
Where M = combined mass of the platform and the two people.
V = velocity of the platform
m = mass of the ball
v = velocity of the ball
The distance that the platform moves is given by:
X = Vt ...eq2
Where t is the time that the ball is in the air.
The time the ball is in the air is given by:
L/(v-V) ...eq3
Where L is the length of the platform
The quantity(v-V) = velocity of the ball relative to the platform.
Combining eq2 and eq3
X = (V/(v - V))L
From eq1 , the ratios of the velocities is V/v = -m/M
X = (V/v)L / (1 - (V/v) = (-m/M) L /(1+ (m/M))
X = -mL/(M + m)
X = - (3.36kg × 3.12m) /( 119kg + 3.36kg)
X = - 10.48/ 122.36
X = -0.082m
The minus sign implies that the displacement of the platform is in the opposite direction to the displacement of the ball.
Therefore, the distance moved by the platform is the magnitude of this displacement 0.082m.
Answer:
magnifying glass
Explanation:
makes objects bigger and smaller / used in science
