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ipn [44]
3 years ago
14

How is the chemical symbol of an element determined

Physics
1 answer:
sveticcg [70]3 years ago
5 0
Look on a periodic table and it will be the one that is in the middle that is in big letters like carbon is C and gold is AU
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The small ball of mass m = 0.5 kg is attached to point A via string and is moving at constant speed in a horizontal circle of ra
babymother [125]

Answer:

d = 2.45 meters

Explanation:

Mass of the ball, m = 0.5 kg

Radius of the circle, r = 0.16 m

The angular speed of the ball around the circle is, \omega=2\ rad/s

The attached figure shows the whole scenario. Let F_t is the force acting on the ball in tangential direction. The forces will balanced each other at equilibrium.

In horizontal direction,

T\ sin\theta=F_t=mr\omega^2................(1)

In vertical direction,

T\ cos\theta=mg...............(2)

From equation (1) and (2) :

tan\theta=\dfrac{r\omega^2}{g}

Also,

tan\theta=\dfrac{r}{d}

d=\dfrac{g}{\omega^2}d=\dfrac{9.8}{2^2}

d = 2.45 meters

So, the value of d is 2.45 meters. Hence, this is the required solution.  

3 0
4 years ago
is a 1.5 V battery is connected in a simple circuit to a lightbulb with a resistance of 8 Ohms the amount of current flowing thr
adoni [48]
.1875 Amperes. 
V=IR  1.5v=8Ω*I
I= .1875 A
6 0
3 years ago
Which feature of the ocean floor lies just off the beach and is a part of continental crust
4vir4ik [10]
The coastline/shoreline
hope this helps
8 0
3 years ago
Read 2 more answers
On a brushed style generator, the increase in AC voltage from the ________ is fed to the automatic voltage regulator, converted
stealth61 [152]

Answer:

On a brushed style generator, the increase in AC voltage from the slip rings is fed to the automatic voltage regulator, converted to DC voltage and fed into the rotor.

Explanation:

In an AC electrical generator, in order to maintain a fixed output, the output voltage  is taken from the slip rings to the brushes (some generators don't have brushes) and converted to DC voltage (since it is an AC generator) and fed back to the rotor.

The rotor winding rotate inside a stationary magnetic field known as stater which induces electrical current in the winding. These winding are connected to slip rings which transfers the current to the outside circuit.

8 0
4 years ago
Find the acceleration of a hamster when it increases its velocity from rest to 8.0 m/s in 3.0 s .
Eva8 [605]
<span>Acceleration is the change in velocity divided by time.
We can find acceleration a, by the following formula

a=v-u/t

where,
v is the final velocity (in this question v=8.0 m/s)
u is the initial velocity (since the hamster starts from rest, u=0)
t is the time taken (i,e 3.0 second)
now by applying the formula we have,

a = 8.0 - 0 / 3
= 8 / 3
= 2.65 m/s</span>²<span> 

The acceleration is 2.65 meters per second squared</span>
6 0
3 years ago
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