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3 years ago

7

What is the mass of 5.4 moles of copper ?

1 answer:

Helen [10]3 years ago

3 0

343.1484 grams. this is your answer.

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Given this graph plotting velocity versus time, estimate the acceleration of object A at points X and Y respectively.

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I think answer should be d. Please give me brainlest let me know if it’s correct

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Which chemical is released by brain cells along an activated reward pathway?

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Cross section of a solid circular rod is subject to a torque of t = 2.7 kn⋅m . if the diameter of the rod is d = 8 cm , what is

polet [3.4K]

Shear Stress= Force along the tangent/ Area
= 2700/π*r^2
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3 years ago

What must the charge (sign and magnitude) of a particle of mass 1.45 g be for it to remain stationary when placed in a downward-

sergey [27]

$q = -21 * 10^{-6} C$

<h3>What is Free-fall acceleration?</h3>

The acceleration is constant and equal to the gravitational acceleration g which is 9.8 m/s at sea level on the Earth.

As we know that charge and its sign that remains in equilibrium is under gravity must be such that it will balance the gravitational force by electric force,

mg =qE

$1.45 * 10^{-3}(9.80)=q(600)\\\\q = 21 *10^{6} C\\\\$

and its sign must be negative so that it will have upward electric force

so it is

$q = -21 * 10^{-6} C$

The charge of a particle of mass is $-21 * 10^{-6} C$

Learn more about Free-fall acceleration: brainly.com/question/2165771

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2 years ago

Which shape below best describes the trajectory of a projectile? A. ellipse B. parabola C. spiral D. semicircle E. zigzag

jeka57 [31]

I believe the answer is B)

Hope this helps*

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3 years ago