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3 years ago

Which of the following is a vector quantity? i. Force ii. Velocity iii. Acceleration iv. All of these 5771

Physics

2 answers:

Vinvika [58]3 years ago

6 0

<h2>All of these</h2>

Option ( iv ) is the correct answer.

<h3 /><h3>☛ <u>Definition</u></h3>

A vector quantity the physical quantity that has both direction as well as magnitude.

Solnce55 [7]3 years ago

4 0

iv. All of these

Because the definition of vector quantity is the physical quantity which has both magnitude and direction.

I hope you understand..

Thanks♥

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A car is traveling at a speed of 37 m/s.

Vika [28.1K]

1. The speed in kilometers per hour (Km/h) is 133.2 Km/h

2. Yes, the speed is exceeding the 125 Km/h limit

<h3>How to convert 37 m/s to Km/h</h3>

From the question given above, the following data were obtained:

Speed (in m/s) = 37 m/s
Speed (in Km/h) =?

We can convert 37 m/s to kilometers per hour (Km/h) by doing the following:

1 m/s = 3.6 Km/h

Therefore,

37 m/s = 37 × 3.6

37 m/s = 133.2 Km/h

Thus, 37 m/s is equivalent to 133.2 Km/h

<h3>2. How to determine if the speed is exceeding the limit</h3>

Speed of car = 133.2 Km/h
Speed limit = 125 Km/h

From the above, we can see that the speed of the car is greater than the speed limit.

Thus, we can conclude that the speed of the car is exceeding the speed limit.

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2 years ago

special metal hangers or stirrips called joist hangers are used when joist must be _____ the bottom of the grider or beam

djyliett [7]

Answer:

Special metal hangers or stirrups called joist hangers are used when joist must be flush with the bottom of the girder or beam.

Explanation:

A joist hanger also known as a beam hanger is a mechanical device which is used to fasten joists and rafters.
The rafters are the carried members to beams and headers are the carrying members.

Thus, special metal hangers or stirrups called joist hangers are used when joist must be flush with the bottom of the girder or beam.

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2 years ago

1. All screws give the same M.A.

Fofino [41]

Answer:

Explanation:

1. All screws give the same M.A.

False - it depends on screw size and threads

2. A screw does its job by moving.

True - as far as screw as a machine

3. A screw with more threads has a smaller M.A.

False - more threads increase output force i.e. higher MA

4. Screws can be used to move things. *

True

8 0

3 years ago

Read 2 more answers

On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 kg/m3 , length 92.6 cm and diameter 2.95 cm fr

slavikrds [6]

Answer:

48.4293354946 N

Yes

Explanation:

d = Diameter of rod = 2.95 cm

h = Length of rod = 92.6 cm

$\rho$ = Density of rod = 7800 kg/m³

g = Acceleration due to gravity = 9.81 m/s²

Volume of rod

$V=\dfrac{1}{4}\pi d^2h\\\Rightarrow V=\dfrac{1}{4}\times \pi\times (2.95\times 10^{-2})^2\times 92.6\times 10^{-2}$

Mass is given by

$m=\rho V\\\Rightarrow m=7800\times \dfrac{1}{4}\times \pi\times (2.95\times 10^{-2})^2\times 92.6\times 10^{-2}\\\Rightarrow m=4.93673144695\ kg$

Weight is given by

$W=mg\\\Rightarrow W=4.93673144695\times 9.81\\\Rightarrow W=48.4293354946\ N$

The weight of the rod is 48.4293354946 N

The mass of the rod is 4.93673144695 kg which is light. So, I will be able to carry the rod without a cart.

7 0

3 years ago

I NEED help<br><br> A brief explanation on how TV uses radio waves.

Ipatiy [6.2K]

Radio waves<span> have lower frequencies and longer wavelengths than microwaves. They are used to transmit </span>television<span> and </span>radio<span> programmes.</span>Television uses<span> higher frequencies than </span>radio. A radio<span> programme receiver does not need to be directly in view of the transmitter to receive programme </span>signals<span>.</span>

6 0

4 years ago

Which of the following is a vector quantity? i. Force ii. Velocity iii. Acceleration iv. All of these 5771​

Which of the following is a vector quantity? i. Force ii. Velocity iii. Acceleration iv. All of these 5771