3 years ago

Please help need answers asap

1 answer:

4 0

Answer- Helium
You can by the number of protons, and if you look at a periodic table the atomic number of helium is the same as the number of protons

You might be interested in

Newton’s first law relates motion to balanced and unbalanced forces.

BlackZzzverrR [31]

True, an object at rest stays and rest and an object in motion stays in motion

8 0

3 years ago

Read 2 more answers

a conducting rod whose length is 25 cm is placed on a u-shaped metal wire that has a resistance of 8.0 ω . the wire and the rod

andreyandreev [35.5K]

Answer:

The current is $I = 1 A$

The direction is anti-clockwise

Explanation:

The diagram for this question is shown on the first uploaded image

From the question we are told that

the length of the conducting rod is $L = 25 \ cm = \frac{25}{100} = 2.5 \ m$

The resistance is $R = 8 \Omega$

The magnetic field is $B = 0.40\ T$

The speed of the rod is $v = 6.0 m/s$

The emf induced is

$\epsilon = BLv$

substituting values we have

$\epsilon = 0.40 * 2.5 * 8$

$\epsilon = 8V$

From ohm law the induced current would be

$I = \frac{\epsilon}{R }$

substituting values we have

$I = \frac{8}{8 }$

$I = 1 A$

The direction anticlockwise this because according to lenze law the current due to change in magnetic field will act in the opposite direction of the force causing the magnetic field to change

4 0

3 years ago

When motion is measured a starting point is called ?

AleksAgata [21]

The starting point for measuring motion is called : The Reference Point.

5 0

3 years ago

What are the features of image formed by convex mirror.

STatiana [176]

The image is always virtual and erect. The image is highly diminished or point sized. It is always formed between F and P.

4 0

3 years ago

Read 2 more answers

Scientists are expected to share their results by

shepuryov [24]

Answer:

Publishing results of research projects in peer-reviewed journals enables the scientific and medical community to evaluate the findings themselves. It also provides instructions so that other researchers can repeat the experiment or build on it to verify and confirm the results.

7 0

3 years ago

Please help need answers asap ​

Please help need answers asap