All categories

2 years ago

My Exams are coming.so, please tell me some ways to score good marks?

Physics

2 answers:

devlian [24]2 years ago

8 0

Explanation:

Study hard focus on your study don't use any device only focus on your study

<h2>Mark me as a brainliest </h2>

Citrus2011 [14]2 years ago

5 0

Instead of asking this question go and study

You might be interested in

A 9.76-m ladder with a mass of 22.6 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upw

galben [10]

Answer:

Part a)

$\tau_{net} = 1397.1 Nm$

Part b)

$I = 702.06 kg m^2$

Explanation:

Part a)

Torque on the rod is due to two forces

(i) Due to weight of the rod at mid point

(ii) Due to external force applied at the end

Now we have

$\tau_{net} = FL - mg\frac{L}{2}$

$\tau_{net} = 254(9.76) - (22.6)(9.81)(\frac{9.76}{2})$

$\tau_{net} = 1397.1 Nm$

Part b)

As per Newton's law we know that

$\tau = I\alpha$

now we have

$1397.1 Nm = I(1.99 rad/s^2)$

$I = 702.06 kg m^2$

6 0

3 years ago

What is the critical angle for light going from crown glass to air?

GarryVolchara [31]

Answer:

The critical angle for a diamond in air is 24 degrees, while the critical angle for glass is 41 degrees.

Explanation:

Rays exiting the material at an angle less than the critical angle will be refracted, and rays incident on the interface at greater than the critical angle will be totally reflected back inside the material.

3 0

3 years ago

The frequency of a wave is 50Hz. What is the period?

Romashka-Z-Leto [24]

Answer:

o.o2 is correct

time=1/f

4 0

3 years ago

Without the force of friction, people would not be able to walk.<br> a. True<br> b. False

Harrizon [31]

<span>that statement is true. In walking process, we need the force of friction so our feet could pushed back agains the ground. Without the force of friction it would be really hard to stand. And even we could stand, we will be sliding all over the place when we try to walk.</span>

6 0

4 years ago

Choose a tool or a device you can investigate. It must not have any source of power other than the person using it. It must use

andrew11 [14]

Answer:

Wheelbarrows, fishing rods, shovels, brooms, arms, legs, boat oars, crow bars, and bottle openers are all examples of levers. Levers may be one of the most used simple machine. As with all simple machines like the lever, they are designed to help make work easier to do.

Explanation:

8 0

3 years ago

My Exams are coming.so, please tell me some ways to score good marks?​

My Exams are coming.so, please tell me some ways to score good marks?