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3 years ago

Work is done when force is applied ____________________________________________?

Physics

2 answers:

Gnoma [55]3 years ago

7 0

The answer is C.
When an object moves in the direction of the force, work is done.

monitta3 years ago

6 0

Answer:

D none of the above

Explanation:

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At t = 0 the end you are oscillating is at its maximum positive displacement and is instantaneously at rest. Write an equation f

vovikov84 [41]

Answer:

The equation of displacement is $y=A\sin(\omega t-2.50 k+\dfrac{\pi}{2})$ .

Explanation:

Given that,

Distance = 2.50 m

We need to calculate the equation of wave

Using general equation of wave

$y=A\sin(\omega t-kx+\phi)$ ....(I)

Where, A = amplitude

t = time

x = displacement

$\phi$ = phase difference

Put the value in the equation

At t = 0, x = 0, y =A

$A=A\sin(0+\phi)$

$\sin\phi=1$

$\phi=\dfrac{\pi}{2}$

From equation (I)

$y=A\sin(\omega t-2.50 k+\dfrac{\pi}{2})$

Hence, The equation of displacement is $y=A\sin(\omega t-2.50 k+\dfrac{\pi}{2})$ .

7 0

3 years ago

A baseball is thrown at an angle of 20° relative to the ground at a speed of 25 m/s if the ball was caught 50 m from the thrower

scoray [572]

Answer:

2.1 s

Explanation:

The motion of the ball is a projectile motion. We know that the horizontal range of the ball is

$d = 50 m$

And that the initial speed of the ball is

$u=25 m/s$

at an angle of

$\theta=20^{\circ}$

So, the horizontal speed of the ball (which is constant during the entire motion) is

$u_x = u cos \theta = 25 \cdot cos 20^{\circ} = 23.5 m/s$

And since the horizontal range is 50 m, the time taken for the ball to cover this distance was

$t=\frac{d}{u_x}=\frac{50}{23.5}=2.1 s$

which is the time the ball spent in air.

8 0

3 years ago

Advantages and Disadvantages of a clinical thermometer

lidiya [134]

Answer:

Explanation:Advatages

1..Its takes precise reading accurate

2. it is moveable because of its small weight

3.It is easy to read and can be kept inside water

Disadvantages

1. It breaks easily because of its small size

2. If broken there can be risk of exposure to mercury chemicals.

4 0

4 years ago

While discussing electronic gasoline injection systems, Technician A states that most multiport EFI systems use two injectors fo

lutik1710 [3]

Answer:Technician B is right.

Explanation: A multi port system is an advanced type of Electronic Fuel Inection system that uses one injection per cylinder. The microcontroller which is a part in the automated system of the Multi port system is responsible for monitoring and controlling the fuel injection process leading to fuel efficiency.

8 0

3 years ago

The curved section of a speedway is a circular arc having a radius of 190 m. this curve is properly banked for racecars moving a

Anestetic [448]

The banking angle of the curved part of the speedway is determined as 32⁰.

<h3>Banking angle of the curved road</h3>

The banking angle of the curved part of the speedway is calculated as follows;

V(max) = √(rg tanθ)

where;

r is radius of the path
g is acceleration due to gravity

V² = rg tanθ

tanθ = V²/rg

tanθ = (34²)/(190 x 9.8)

tanθ = 0.62

θ = arc tan(0.62)

θ = 31.8

θ ≈ 32⁰

Learn more about banking angle here: brainly.com/question/8169892

#SPJ1

8 0

2 years ago