All categories

3 years ago

Add me on insta...aidynnekl

Physics

2 answers:

Setler [38]3 years ago

6 0

Answer:

Ok :)

Explanation:

goldenfox [79]3 years ago

4 0

Good luck on getting followers

You might be interested in

A baton twirler has a baton of length 0.36 m with masses of 0.48 kg at each end. Assume the rod itself is massless. The rod is f

AleksAgata [21]

Answer:

Part a)

When rotated about the mid point

$\tau = 0.021Nm$

Part b)

When rotated about its one end

$\tau = 0.042 Nm$

Explanation:

As we know that the angular acceleration of the rod is rate of change in angular speed

so we will have

$\alpha = \frac{\Delta \omega}{\Delta t}$

$\alpha = \frac{2.4 - 0}{3.6}$

$\alpha = 0.67 rad/s^2$

Part a)

When rotated about the mid point

$I = 2mr^2$

$I = 2(0.48)(0.18)^2$

$I = 0.0311 kg m^2$

now torque is given as

$\tau = 0.0311 (0.67)$

$\tau = 0.021Nm$

Part b)

When rotated about its one end

$I = m(2r)^2$

$I = (0.48)(0.36)^2$

$I = 0.0622 kg m^2$

now torque is given as

$\tau = (0.0622)(0.67)$

$\tau = 0.042 Nm$

3 0

3 years ago

An object that is dropped from a height H falls with a constant acceleration of g. The final

GuDViN [60]

The height need to change by 4 to double the final velocity.

<h3>Final velocity of the object</h3>

The final velocity of an object during a free fall is related to maximum height of fall as given the equation below.

v = √2gh

v² = 2gh

v²/h = 2g

v₁²/h₁ = v₂²/h₂

when v₂ = 2v₁, change in height is calculated as;

h₂ = h₁v₂²/v₁²

h₂ = (h₁ (2v₁)²) / (v₁)²

h₂ = 4h₁v₁² / v₁²

h₂ = 4h₁

Thus, the height need to change by 4 to double the final velocity.

Learn more about final velocity here: brainly.com/question/25905661

#SPJ1

4 0

2 years ago

What does the odometer of an automobile measure? Which of the following is moving faster? Justify your answer.

snow_tiger [21]

The odometer of an automobile measures the distance travelled by the vehicle. the car(b) is moving faster.
This can be explained as follows:
In order to compare the speed of both the vehicles and determine which one is moving faster, the speed of both the vehicles should be represented by the same unit.
Speed of scooter = 300 m/min
Converting this to km/hr,
Distance travelled by the scooter in 1 min= 300 m
Therefore, distance travelled by the scooter in 60min( or 1 hr ) = 18000m = 18 km
Speed of the car= 36 km/hr
Since the car travels a greater distance in 1 hr , we can say that it is moving faster.

Read more on Brainly.in - https://brainly.in/question/3796417#readmore

6 0

4 years ago

What is the speed of a wave with a wavelength of 2 m and a frequency of 9 Hz?

ale4655 [162]

Answer:

The speed of a wave would be 18 with a wavelength of 2 m and a frequency of 9 Hz.

7 0

3 years ago

A 50 kg aardvark runs with a speed of 6 m/s. what is the kinetic energy of the aardvark

jeyben [28]

Answer:

900 J

Explanation:

0.5 x 50= 25 x 6^2= 900 J

5 0

4 years ago