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NNADVOKAT [17]
2 years ago
6

A nanometer is a unit of mass, whereas a nanosecond is a unit of time. Question 1 options: True False

Physics
1 answer:
Alenkasestr [34]2 years ago
6 0

Answer:

True.

Explanation:

A nanometer is a unit of mass, whereas a nanosecond is a unit of time. To convert 1.3 hours to minute, you would multiply by 1 h / 60 min. Kilometer is a unit of length, whereas kilogram is a unit of mass. True.

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The results of a recent television survey of American TV households revealed that 86 out of every 100 TV households have at leas
Lelechka [254]

Answer:

q = \dfrac{14}{100}

Explanation:

given,

86 out of every 100 TV households have at least one remote control

Probability of any material is calculated by.

Probability = \dfrac{favourable\ outcome}{Total\ outcome}

P(at\ least\ one\ remote\ control)=\dfrac{86}{100}

P(at\ least\ one\ remote\ control)=0.86

now, Calculating probability that at least one remote control

   q = 1 - 0.86

   q = 0.14

P(doesnot\ have\ at\ least\ one\ remote\ control)=\dfrac{14}{100}

q = \dfrac{14}{100}

7 0
3 years ago
Please help
adelina 88 [10]

Answer:

I'm pretty sure that the answer is A

5 0
3 years ago
The Kinetic Theory of Matter states that the particles that make up all matter are in perpetual motion. We know that a solid can
evablogger [386]
<span>1) Explain how the particles that make up solid matter can be in perpetual motion if they do not change position.  Answer: they do not mov, just vibrate a bit more and move further apart. And as a result solid expand a bit.

</span><span>2) How the Kinetic Theory of Matter defines heat. Answer: Heat is a form of energy that particles convert into kinetic energy. Adding a heat energy increases the kinetic energy of particles. This means that as a substance is heated - the particles vibrate faster and move further apart. </span>
4 0
3 years ago
Read 2 more answers
Many battery-powered devices come with cords that allow them to be
lara [203]

Answer:

The change that has to take place inside the power cord in order for the device to function properly include;

The changing of the alternating current (AC) from the electrical outlet to the direct current having a specific voltage and current value with which the device can be powered

Explanation:

A battery powered device makes use of direct current (DC) electric power from a battery, while the power normally given out at an electrical outlet comes as an alternating current (AC) electric power source.

The power cord for battery-powered device, also known as an AC/DC adapter, that allows them to be plugged into electrical outlets converts the AC electric current it obtains from the electrical outlets to DC electrical current of the appropriate voltage and amperage that the device can make use of for electric power to function and for charging the battery which is the power source for the device

Therefore, the change that has to take place in the power cord is the conversion of the electric outlet alternating current (AC) voltage and amperage values, into direct current (DC) of the required voltage and current for the device

4 0
2 years ago
You are to design a rotating cylindrical axle to lift 800-N buckets of cement from the ground to a rooftop 78.0 m above the grou
Ronch [10]

Answer:

The diameter of the axle is 5.08 cm.

Explanation:

Given that,

Force = 800 N

Distance = 78.0 m

Suppose we need to find the diameter of the axle be in order to raise the buckets at a steady 2.00 cm/s when it is turning at 7.5 rpm.

We need to calculate the radius of axle

Using formula of linear velocity

v = r\omega

r=\dfrac{v}{\omega}

Where, v =velocity

r = radius

\omega=angular velocity

Put the value into the formula

r=\dfrac{2.00}{7.5\times\dfrac{2\pi}{60}}

r=2.54\ cm

We need to calculate the diameter of axle

Using formula of diameter

d=2r

d=2\times2.54

d=5.08\ cm

Hence, The diameter of the axle is 5.08 cm.

8 0
3 years ago
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