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3 years ago

In a machine, work output is less than work input because some energy is converted into thermal energy. true or false.

Physics

2 answers:

tamaranim1 [39]3 years ago

7 0

True ..........................

blondinia [14]3 years ago

4 0

true because im smart like that

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An object has a gravitational force of 111N acting on it. If it had 4 times more mass, what would the force on it be?

Nastasia [14]

Answer:

What is the gravity equation? — It is equal to 6.674×10-11 N·m²/kg². Did you notice that this equation is similar to the formula in Coulomb's law?

Explanation:

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2 years ago

Aray diagram is shown.<br> What does the letter red line represent?

Fiesta28 [93]

Answer:

Red line is reflected ray.

Explanation:

According to the given figure, the blue line represent the incident ray. It strikes the surface and reflection occurs. The dotted line shows normal.

After reflecting the surface, the ray of light is reflected. Red line shows the reflected light.

In this case, the laws of reflection follows i.e. the angle of incidence is equal to the angle of reflection.

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2 years ago

A good way to de-magnetize something is to

FromTheMoon [43]

Answer:

B. place it in a magnetic field

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3 years ago

Read 2 more answers

A long wire carrying I=1.1A of constant current oriented North-to-South (and the current is running northwards) is placed horizo

Tema [17]

Answer:

The absolute value of the angular deviation is 39.3°.

Explanation:

Given that,

Current = 1.1 A

Distance = 0.9 cm

Magnetic field = 20μT

We need to calculate the magnetic field due to wire

Using formula of magnetic field

$B=\dfrac{\mu_{0}I}{2\pi d}$

Put the value into the formula

$B=\dfrac{4\pi\times10^{-7}\times1.1}{2\pi\times0.9\times10^{-2}}$

$B=24.4\times10^{-6}\ T$

$B=24.4\ \mu T$

We need to calculate the absolute value of the angular deviation

Using formula of direction

$\theta=\tan^{-1}(\dfrac{B_{E}}{B_{w}})$

$\theta=\tan^{-1}(\dfrac{20 \mu}{24.4 \mu})$

$\theta=39.3^{\circ}$

Hence, The absolute value of the angular deviation is 39.3°.

5 0

3 years ago

What is the relation between centre of gravity and stability

maw [93]

Explanation:

tilting it will raise the height of its center of gravity.

8 0

2 years ago