Question

Which nucleus completes the following equation

Answer 1

@Vocaloid

Answer 2

39
16 S?

Answer 3

39
16 Sr?

Answer 4

balance the bottom row

17 = -1 + ___

Answer 5

18

Answer 6

good so what element has atomic # 18?

Answer 7

ar

Answer 8

good so

\[_{18}^{39}Ar\]

Answer 9

When upward force balances the weight of an object thus allowing the oobject to float?

Answer 10

Adhesive force
Buoyant force
Cohesive force
Pressure

Answer 11

Buoyant?

Answer 12

good

Answer 13

If an electromagnet wave has a frequency of 8 x 10^12 Hz. What is its wavelength. use i=-v/f. speed of light is 3 x 10^8

Answer 14

3.8 x 10^21?

Answer 15

check your exponent again

(3*10^8)/(8*10^12) = ?

Answer 16

3.8 x 10^7

Answer 17

-7*

Answer 18

exponent should be -5 if I'm interpreting the problem correctly

Answer 19

if an electromagnet wave has a frequency of 8 x 10^14 Hz. What is its wavelength. use i=-v/f. speed of light is 3 x 10^8

Answer 20

this is it srry

Answer 21

alright cool then yeah the exponent is -7

Answer 22

Which element has the fewst valance electrons

Answer 23

Silicon
Magnesium
Argon
Fluorine

Answer 24

Magneiusm?

Answer 25

good

Answer 26

At which point will the currents that transfer heat throughout a gas cease to flow?

Answer 27

When the substance changes state and becomes a liquid

When the particles stop bumping into eaach other

When The is very hot on top aand cold beneath

When the entire gas is a single temp

Answer 28

B?

Answer 29

C is when the substance *

Answer 30

uh I'm not 100% sure but I believe heat transfer stops at thermal equilibrium which leads us towards D not B

Answer 31

So when gas is a single temperature

Answer 32

yes

Answer 33

What is the change in internalenergy if 80j of heatis released from a system and 30j of work are done on the system

Answer 34

50j

Answer 35

?

Answer 36

careful with signs

if heat is being released then Q is negative

Answer 37

-50

Answer 38

?

Answer 39

good

Answer 40

Wht type of image is formed by a lens of m= 3.2

Answer 41

Smaller than the object and virtual

Larger than the object and real

Smaller than the object and real

Larger thsn the object and virtual

Answer 42

A

Answer 43

?

Answer 44

I don't really know how to do mirror/lens problems

Answer 45

The phrase hot air rises describes which type of heat transfer

Answer 46

Insulation
Convectiom
Conduction
Radiation

Answer 47

D?

Answer 48

hm, not quite, remember what the heat transfer between fluids is called

Answer 49

Convection

Answer 50

good, so convection

Answer 51

Which statement correctly describes magnetic field lines

Answer 52

Form loops by joining north pole and South pole

Form loops by joining pos charge to neg charge

Parallel to one another

Show direction a south pole will ooint

Answer 53

A

Answer 54

Actually b

Answer 55

you had it right the first time, B would be electric field lines not magnetic field lines so A is the better option