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3 years ago

Which of the following statement(s) is

Physics

1 answer:

alexgriva [62]3 years ago

5 0

Answer:

Explanation:

A rectifier is an electrical device that converts alternating current (AC) to direct current (DC), a process known as rectification. Rectifiers have many uses including as components of power supplies and as amplitude modulation detectors (envelope detectors) of radio signals. Rectifiers are most commonly made using solid state diodes but other type of components can be used when very high voltages or currents are involved. When only a single diode is used to rectify AC (by blocking the negative or positive portion of the waveform), the difference between the term diode and the term rectifier is simply one of usage. The term rectifier describes a diode that is being used to convert AC to DC. Most rectifier circuits contain a number of diodes in a specific arrangement to more efficiently convert AC power to DC power than is possible with only a single diode.

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A two-dimensional object placed in the xy-plane has three forces acting on it: a force of 3.0 n along the x-axis acting at a poi

Anastasy [175]

the net torque about the point (-1 m, 1 m) is 4 N-m.

The resultant force acting on the object is calculated as

R^2=(-5+3)^2+2^2=2.82 N

Distance of the point from the resultant force

d^2=(-1)^2+1^2=1.414

The net torque acting on the point (-1 m, 1 m) is

T=2.82×1.41=3.98 N-m

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4 years ago

4. A crane has a weight of 85000 N and it rests on two caterpillar tracks which have a total

vagabundo [1.1K]

Answer:

50kPa and if the area decreases, the pressure increases

Explanation:

P=F/A; P=pressure, F=force, A=area

85000N/1.7 m^2 = 50000 N/m^2; Pa = Pascal = N/m^2

=50 kPa

4 0

3 years ago

Explain how each of the following changes as you travel across the spectrum: wavelength, frequency, and energy

Wittaler [7]

As you go from Radio waves across to Gamma eats : Wavelength decreases and frequency and energy increase.

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3 years ago

Two workers are sliding 300 kg crate across the floor. One worker pushes forward on the crate with a force of 390 N while the ot

romanna [79]

Answer:

The crate's coefficient of kinetic friction on the floor is 0.23.

Explanation:

Given that,

Mass of the crate, m = 300 kg

One worker pushes forward on the crate with a force of 390 N while the other pulls in the same direction with a force of 320 N using a rope connected to the crate.

The crate slides with a constant speed. It means that the net force acting on it is 0. Net force acting on it is given by :

$F_1+F_2=\mu N\\\\\mu=\dfrac{F_1+F_2}{mg}\\\\\mu=\dfrac{390+320}{300\times 10}\\\\\mu=0.23$

So, the crate's coefficient of kinetic friction on the floor is 0.23.

6 0

3 years ago

ASAPP!!!!!!

lord [1]

I would say the plastic grip because glass, wood, and plastic are all good conductors of electricity

5 0

3 years ago