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RSB
9 days ago
7

Mark and Balthazar are preparing to conduct neutralization reactions in which they add a base to two different solutions, citric

acid and sodium carbonate. These solutions may irritate the skin or eyes. What safety equipment should Mark and Balthazar be familiar with before they begin?
Physics
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When you apply the torque equation ∑τ = 0 to an object in equilibrium, the axis about which torques are calculated:
Softa [3030]

Answer:

option D.

Explanation:

The correct choice is option D.

For an object in equilibrium, the torque measured at any point will be zero.

An object is deemed to be in equilibrium when the net moment acting on it equals zero.

If the object experiences a net moment not equal to zero, it will rotate and will not remain stable.

3 0
4 months ago
The mass of the Sun is 2multiply1030 kg, and the mass of the Earth is 6multiply1024 kg. The distance from the Sun to the Earth i
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a) 3.56 x 10^22 N. b) 3.56 x 10^22 N. The sun’s mass is M = 2 x 10^30 kg, while the Earth's mass is m = 6 x 10^24 kg, with a distance of R = 1.5 x 10^11 m separating them. Applying Newton's law for gravitational force F = G (mM / R²), where G = 6.67 × 10^-11 m^3 kg^-1 s^-2 gives us F = 3.56 x 10^22 N. A) The gravitational force by the sun on Earth equates to the force exerted by Earth on the sun, which is also 3.56 x 10^22 N.
7 0
3 months ago
In an electricity experiment, a 1.0g plastic ball is suspended on a60-cm-long string and given an electric charge. A charged rod
Ostrovityanka [3204]

a) The magnitude of the electric force: 3.57\cdot 10^{-3} N

b) String tension: 0.010 N

Clarification:

a)

When a charged rod approaches the ball, it remains suspended at an incline. This allows us to analyze the forces acting in two perpendicular orientations:

- Horizontally, the electric force F_Eacts in one direction, and the tension component in the string opposes it, T sin \thetadenoted by T, which is the angle relative to the vertical\theta=20^{\circ}

- Vertically, the weight of the ball mgacts downward (with m=1.0 g = 0.001 kgas the ball's mass and g=9.8 m/s^2as gravitational acceleration), while the tension component acts upward T cos \theta

Consequently, since the ball is in equilibrium, the following two equations can be established:

T sin \theta =F_E\\Tcos \theta = mg

Dividing the two equations gives

tan \theta=\frac{F_E}{mg}

and solving for the electric force yields

F_E=mg tan \theta=(0.001)(9.8)tan 20^{\circ}=3.57\cdot 10^{-3} N

b)

To derive the tension in the string, one can use either of the above equations; for example, the equation for the horizontal component,

T sin \theta =F_E

Where

is the electric force

is the angle relative to vertical F_E=3.57\cdot 10^{-3} NThe tension in the string can be calculated as follows:

\theta=20^{\circ}

Discover more about electric force:

6 0
2 months ago
A solenoid having N turns and carrying a current of 2.000 A has a length of 34 00 cm. If the magnitude of the magnetic field gen
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B) 1218.
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2 months ago
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