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4 years ago

When a bat hits a ball, the impulse is

Physics

2 answers:

san4es73 [151]4 years ago

8 0

A). the force implied hope this helps

mario62 [17]4 years ago

3 0

<span>A) The force multiplied by the time the objects are in contact.

Hope this helps!</span>

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Which of the following best explains how the Ptolemy’s (geocentric) and Copernicus’s (heliocentric) models of the solar system d

TiliK225 [7]

Answer:

The correct answer is c

Explanation:

In these two different models of movement of the planets

Ptolemy raises the Earth as the center of the solar system

In the Copernicus system, it poses the Sun as the center of the solar system.

Copernicu's system was accepted for giving a simpler and more complete explanation of the problem

The correct answer is c

7 0

4 years ago

At the bottom of a frictionless ramp, a 2kg mass reaches a speed of 9 m/s, how high is the top of the ramp? *

noname [10]

V=√(2gs)
9=√(2×9.8×s)
s=4.1m

3 0

3 years ago

Ricardo and Jane are standing under a tree in the middle of a pasture. An argument ensues, and they walk away in different direc

Lapatulllka [165]

Answer:

a) d = 30.79 m , b) θ = -22.4° , θ = 22.4 South of East

Explanation:

The easiest way to solve problems with vectors is to use their components, for this the East-West direction coincides with the x-axis and the North-South direction coincides with the y-axis

Let's use the index for / Ricardo and the index for Jane, let's break down the displacements

Richard

X axis

x₁ = 26.0 sin (60)

x₁ = -22.52 m

Y Axis

y₁ = 26.0 cos 60

y₁ = 13 m / s

Jane

X axis

x₂ = 16.0 cos (180 +30)

x₂ = -13.85 m

Y Axis

y₂ = 16.0 sin (180 + 30)

y₂ = - 8.0 m

Now we can use Pythagoras' theorem to find the distance between them

d = √ [(x₂ -x₁)² + (y₂ -y₁)²]

d = √ [(-13.85 + 22.52)² + (-8 -13)²]

d = 30.79 m

Let's use trigonometry to enter the address

tan θ = Δy / Δx

θ = tan⁻¹ Δy / Δx

θ = tan⁻¹ (-13.85 + 22.52) / (-8 - 13)

θ = tan⁻¹ (-8.67 / 21)

θ = -22.4°

The negative sign indicates that the angle is measured from the axis clockwise.

In the form of cardinal s point is

θ = 22.4 South of East

4 0

4 years ago

From a window 20 feet above the ground, the angle of elevation to the top of a building across the street is 78°, and the angle

Papessa [141]

The answer would be 371.16 ft.

Refer to the diagram for the scenario. The drawing is not to scale.

Notice the diagram that you will find to adjacent right triangles. All you need to do is first solve for the needed side of one triangle, by using one side.

It sounds confusing I know, but let's do this step by step.

Angle of depression is 15°.

We use this first because we do not have enough data to use the angle of elevation.

To get the adjacent side, we use the trigonometric function TOA which means:

$tan\theta= \dfrac{opposite}{adjacent}$

We use the height of the first building as our reference, so our given will be:

Opposite = 20ft

θ = 15°

Now we put that into our formula:

$tan\theta= \dfrac{opposite}{adjacent}$

$Tan15 = \dfrac{20ft}{adjacent}$

$adjacent = \dfrac{20ft}{Tan15}$

Adjacent = 74.64 ft

Angle of elevation is 78°:

Now that we have that we can solve for the height from the point of 20ft. We use the same formula, because we are looking for the opposite, given the adjacent.

$tan\theta= \dfrac{opposite}{adjacent}$

$Tan78 = \dfrac{opposite}{74.64ft}$