True of false A millimeter I'd larger than a kilometer. So, these prefixes are listed in order of increasing size going from left to right

Answers

Answer 1

Answer: False, a millimeter is smaller than a kilometer.

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Which type of thunderstorm forms in a narrow band that's about 10 to 20 miles wide? A. Single-cell thunderstorm

B. Multi-cell line

C. Multi-cell cluster

D. Supercell

Answers

Answer:

B. Multi-cell line

Explanation:

A multi-cell line, or how it is more commonly known, a squall line, is basically a group of storms forming a line, like a bow, they have been seen to cover hundreds of miles long but usually only 10 or 20 miles wide.

It is theorized that this is because when a cyclone is formed, there are two forces of "wind" one ahead and one behind, concentrating air masses as if the winds were "squishing" them to form a line.

Answer: Multi-cell Line

Explanation:

Multi-cell line storms form in a long, narrow line. While multi-cell lines may be just 10 to 20 miles wide, they can be hundreds of miles long. Multi-cell lines are known as "squall lines."

A plane heads due north at an airspeed of 180 km/h. The windis blowing from the west at 60km/h. What is the plane's
velocity with respect to the ground?

Answers

Answer:

190 km/h

Explanation:

randomly picked it

Final answer:

To find the plane's velocity with respect to the ground, we need to consider the combination of the plane's airspeed and the wind's speed and direction. The resulting velocity is 180 km/h north, 60 km/h west.

Explanation:

To find the plane's velocity with respect to the ground, we need to consider the combination of the plane's airspeed and the wind's speed and direction. Since the plane is heading due north and the wind is blowing from the west, we can use vector addition to find the resulting velocity.

First, we break down the airspeed into its north and east components. The north component is 180 km/h, and the east component is 0 km/h because the plane is not moving in that direction.

Next, we break down the wind's velocity into its north and east components. The north component is 0 km/h because the wind is blowing from the west, and the east component is -60 km/h because the wind is against the plane's motion.

Finally, we add the north components together and the east components together. The resulting velocity is 180 km/h north, 60 km/h west. This is the plane's velocity with respect to the ground.

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Just after a motorcycle rides off the end of a ramp and launches into the air, its engine is turning counterclockwise at 8325 rev/min. The motorcycle rider forgets to throttle back, so the engine's angular speed increases to 12125 rev/min. As a result, the rest of the motorcycle (including the rider) begins to rotate clockwise about the engine at 4.2 rev/min. Calculate the ratio IE/IM of the moment of inertia of the engine to the moment of inertia of the rest of the motorcycle (and the rider). Ignore torques due to gravity and air resistance.

Answers

Answer:

$(Ie)/(lm) = 1.10*10^(-3)$

Explanation:

GIVEN DATA:

Engine operating speed nf = 8325 rev/min

engine angular speed ni= 12125 rev/min

motorcycle angular speed N_m= - 4.2 rev/min

ratio of moment of inertia of engine to motorcycle is given as

$(Ie)/(lm) = (-N)/((nf-ni))$

$(Ie)/(lm) = (-(-4.2))/((12125 - (8325)))$

$(Ie)/(lm) = 1.10*10^(-3)$

Answer: $1.105* 10^(-3)$

Explanation:

Given

Initial angular speed of engine( $\omega _E$ )=8325 rpm

Final angular speed of engine( $\omega _E_f$ )=12125 rpm

Initial angular speed of Motorcycle( $\omega _M$ )=0 rpm

Final angular speed of engine( $\omega _M_f$ )=4.2 rpm

as there is no external torque therefore angular momentum remains conserved

$I_E\omega _E+I_M\omega _M=I_E\omega _E_f+I_M\omega _M_f$

$I_E\omega _E+=I_E\omega _E_f+I_M\omega _M_f$

$I_E\left ( \omega _E-\omega _E_f\right )=I_M\omega _M_f$

$(I_E)/(I_M)=(\omega _M_f)/(\omega _E-\omega _E_f)$

$(I_E)/(I_M)=(-4.2)/(8325-12125)=0.0011052\approx 1.105* 10^(-3)$

Which best compares a brush and a commutator in an electric motor?

Answers

The purpose of the brush is supposed to be to lessen the amount of damage or wear placed upon the motor. I hope this helps with your answer choices since you did not post any.

Two tuning forks, 254 Hz. and 260 Hz., are struck simultaneously. How many beats will be heard?8

4

6

Answers

The longer you continue to listen, the more beats will be heard.

They'll occur at the rate of (260Hz - 254Hz) = 6 Hz .

Answer:

6.00 beats per second

Explanation:

The SI base unit for mass is the _____. A. kilogram B. newton C. gram D. slug E. pound

Answers

Final answer:

The SI base unit for mass is the kilogram (kg), which is defined as the mass of a specific reference object. The gram (g) is a smaller unit of mass, equal to 1/1000 of a kilogram.

Explanation:

The SI base unit for mass is the kilogram (kg). It is defined as the mass of a specific reference object, which was originally one liter of pure water. In May 2019, the definition was changed to be based on fundamental physical constants. The gram (g) is a smaller unit of mass, equal to 1/1000 of a kilogram.

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