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4 years ago

A person opens a door by applying a 10-N force perpendicular to it at a distance 0.90m from the hinges.

1 answer:

6 0

You faded out there before asking your question.
Here's some info that might be of interest:

Torque = (force) x (distance from the pivot) = (10 n) x (0.9 m) = 9 newton-meters

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The first man-made alloy (bronze) is comprised of what two metals?

Olin [163]

Answer & Explanation:

Bronze is one of the earliest metals known to man. It is defined as an alloy made of copper and another metal, usually tin. Compositions vary, but most modern bronze is 88% copper and 12% tin. Bronze may also contain manganese, aluminum, nickel, phosphorus, silicon, arsenic, or zinc.

8 0

3 years ago

Read 2 more answers

A car can go from 0.0 m/s to 100m/s in 6 seconds. What is the acceleration

Mama L [17]

Answer:

100-0 / 6 = 16.66 m/s

Explanation:

acceleration = vf-vi / time

vf= 100m/s

vi= 0 m/s

t= 6s

7 0

3 years ago

A 12.0-m wire with a mass of 145 g is under tension. A transverse wave, for which the frequency is 630 Hz, the wavelength is 0.5

miskamm [114]

Answer:

The maximum traverse acceleration is $\alpha = 31346.095 m/s^2$

Explanation:

Generally the maximum transverse acceleration is mathematically represented as

$\alpha = w^2 A$

Where $w$ is the angular velocity which is mathematically evaluated as

$w = 2 \pi f$

Substituting the values given in the question

$w = 2 * 3.142 * 630$

$= 3958.92 rad/s$

A is the A is amplitude with a value of 2.0mm $= \frac{2}{1000} = 0.002m$

Substituting this into the formula for maximum transverse acceleration

$\alpha = 3958.96^2 * 0.002$

$= 31346.095 m/s^2$

4 0

4 years ago

Quickly spinning the handle of a hand generator, Kristina is able to light three bulbs in a circuit. When she spins the generato

erastova [34]

Answer:

Voltage is too low

Explanation:

Generators produce a potential difference (voltage) by spinning a coil of wire in a magnetic field by induction.

The produced voltage is proportional to the relative speed of the coil wire with respect to the magnetic field.

Hence, for a given generator, the higher the speed the higher the potential difference.

Therefore, it is concluded immediately that when Kristina spins the generator slowly, less potential difference (voltage) is generated.

Also, you must know that the brightness of the bulbs varies with the current: the higher the current, the brigther the bulbs.

On the other hand, the basic realtion between voltage (V), resistance (R), and current I) is given by Ohm's law: V = R × I. This is, voltage and current are proportional.

Since the generator is producting less voltage, for the same bulbs (which are resistors) , the current will be lower too. And, as stated, lower current means lower brightness, which explains why when Kristina spins the generator slowly, the bulbs are very dim.

5 0

3 years ago

A force has both______ and _______. Question 3 options: Magnitude & Direction Direction & Motion Speed & Impact Spee

Lemur [1.5K]

Answer:

A force has both Direction and Motion.

Explanation:

For example, when finding acceleration you take the time and divided it by distance. If the thing you are measuring is going in the positive direction, the acceleration will be positive and if it is going in the negative direction the acceleration will be negative.

4 0

3 years ago

Read 2 more answers