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3 years ago

A gram is the basic metric unit for measuring which of the following?

Physics

2 answers:

DanielleElmas [232]3 years ago

7 0

Gram is used for measuring weight

Mazyrski [523]3 years ago

3 0

A, Weight, Because a Gram is the Basic metric unit For measuring Weight

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The height of a tree is 4 m.

ryzh [129]

Answer:

1.2

Explanation:

4/100 × 30= 1.2

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3 years ago

Spherical mirror is a

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Answer:

Spherical mirror is a mirror with a curved reflecting surface.

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2 years ago

65mi/hr South is an example of

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Answer:

It's an example of velocity.

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2 years ago

A particle leaves the origin with a speed of 3 106 m/s at 38 degrees to the positive x axis. It moves in a uniform electric fiel

Salsk061 [2.6K]

Answer:

If the particle is an electron $E_y = 3.311 * 10^3 N/C$

If the particle is a proton, $E_y = 6.08 * 10^6 N/C$

Explanation:

Initial speed at the origin, $u = 3 * 10^6 m/s$

$\theta = 38^0$ to +ve x-axis

The particle crosses the x-axis at , x = 1.5 cm = 0.015 m

The particle can either be an electron or a proton:

Mass of an electron, $m_e = 9.1 * 10^{-31} kg$

Mass of a proton, $m_p = 1.67 * 10^{-27} kg$

The electric field intensity along the positive y axis $E_y$ , can be given by the formula:

$E_y = \frac{2 m u^2 sin \theta cos \theta}{qx} \\$

If the particle is an electron:

$E_y = \frac{2 m_e u^2 sin \theta cos \theta}{qx} \\$

$E_y = \frac{2 * 9.1 * 10^{-31} * (3*10^6)^2 *(sin38)( cos38)}{1.6*10^{-19} * 0.015} \\$

$E_y = 3311.13 N/C\\E_y = 3.311 * 10^3 N/C$

If the particle is a proton:

$E_y = \frac{2 m_p u^2 sin \theta cos \theta}{qx} \\$

$E_y = \frac{2 * 1.67 * 10^{-27} * (3*10^6)^2 *(sin38)( cos38)}{1.6*10^{-19} * 0.015} \\$

$E_y = 6.08 * 10^6 N/C$

8 0

2 years ago

Please answer it is urgent <br>I will make u brainlist

adelina 88 [10]

For B, it is because water is a really good conductor of electricity, so the electrician will get shocked

6 0

3 years ago