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Mama L [17]
3 years ago
10

Which of these period three elements from the periodic table would you predict to be the MOST metallic and why? A) Al B) Si C) P

D) S E) Cl F) Ar
Physics
1 answer:
Sauron [17]3 years ago
6 0
Sorry I don’t even know
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What’s the voltage of a battery in a circuit with resistance of 3 ohms and current of 5 amps?
alexira [117]

Answer: The correct answer is-15 Volts.

Explanation-

Voltage of a battery can be defined as the difference in electric potential that lies between the positive and negative terminals of a battery.

It can be calculated using Ohm's law, which states that the electric potential difference between two points on a circuit is equal to the product of the current that flows between the two points (I) and the total resistance that sis present between the two points. It can be mathematically depicted as-

ΔV = I • R  

Putting the value of 'I' and 'R', we get-

ΔV = 5 X 3

    =  15 V

8 0
3 years ago
A 1.5 kg ball is thrown upward at 10 m/s. What is its velocity when it is 2 m above the release point?
Anestetic [448]

Answer:

7.75m/s or 2\sqrt{15}m/s

Explanation:

m = 1.5kg

u= 10m/s

s = 2m

a = 10m/s^{2}

v = ?

acceleration due to gravity is negative when an object is going up because the force of gravity reduces the speed of the object

using the formula ;

v^{2} = u^{2} - 2as since the object is moving upwards (negative acceleration)

= 100 - 2(10)(2)

100 - 40

v^{2} = 60

v = \sqrt{60}

= 7.75m/s

5 0
3 years ago
If a pendulum clock keeps perfect time at the base of a mountain, will it also keep perfect time when it is moved to the tip of
vazorg [7]

Answer:

No

Explanation:

The period of a pendulum is given by

T=2\pi \sqrt{\frac{L}{g}}

where

L is the length of the pendulum

g is the acceleration due to gravity

We see that the period of the pendulum depends on the value of g. However, the value of the gravitational acceleration is different at different locations on Earth. In particular, at the top of the mountain the value of g is slightly lower than the value of g at the base of the mountain; in fact, g is given by

g=\frac{GM}{r^2}

where

G is the gravitational constant

M is the Earth's mass

r is the distance from the Earth's center

so since r is greater at the top of the mountain, g is lower, and therefore the period of the pendulum will be slightly longer.

8 0
3 years ago
To what extent do drugs benefit society (legal and illegal drugs - can include medication)
Marina86 [1]
They can help with disease and infections pain and others marijuna can help calm u
5 0
4 years ago
9. An object of weight 80kg on earth is taken to a
ryzh [129]

Answer:

266. 4

Explanation:

acceleration due to vravity on earth is 10m/s.

One third of it is (1/3)*10

=3.333m/s.

Weight is mass × acceleration

weight= 80kg÷ 3.333m/s

W= 266.4 Newton.

4 0
3 years ago
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