2 years ago

In equation y = mx means what

Physics

1 answer:

andrew11 [14]2 years ago

8 0

The slope is the number "m" that is multiplied on the x, and "b" (seems that you forgot to write it) is the y-intercept

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What is the wavelength of a 10 Hz wave that travels with a speed of 5 m/s?

garik1379 [7]

B

V= f x lambda
V= 5m/s
F = 10hz
Lambda = ?
5 = 10 x lamba
5 /10 = lambda
Wavelength =0.5

8 0

2 years ago

in which kind of radioactive decay would the number of protons in the resulting nucleus be more than in the initial nucleus?

9966 [12]

Answer:

A related type of beta decay

Explanation:

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2 years ago

What minimum heat is needed to bring 250 g of water at 20 ∘C to the boiling point and completely boil it away? The specific heat

Amiraneli [1.4K]

Answer:633.8 KJ

Explanation:

Given

mass of water $\left ( m\right )=250gm$

Initial temperature $\left ( T_i\right )=20^{\circ}C$

Final temperature $\left ( T_f\right )=100^{\circ}C$

Specific heat of water $\left ( c \right )$ =4190 J/kg-k

heat of vaporization $\left ( L\right )=22.6\times 10^5 J/kg$

Heat required for process $\left ( Q\right )$ =heat to raise water temperature from 20 to 100 +Heat to vapourize water completely

Q=mc $\left ( T_f-T_i\right )+mL$

Q= $0.25\times 4190\times \left ( 100-20\right )+0.25\times 22\times 10^5$

Q= $\left ( 0.838+5.5\right )\times 10^5$

Q= $6.338\times 10^5J=633.8 KJ$

4 0

3 years ago

The current in a resistor is 3.0 A, and its power is 60 W. What is the voltage?

kkurt [141]

Answer:

I font now but I think its 2.0 + 78 w -60

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2 years ago

Two hicers are 13 miles apart and walking toward each other. They meet in 2 hours. Find the rate of each hiker if one hiker walk

xz_007 [3.2K]

Answer:

Explanation:

Let r be the rate of the slower walker in mph

[r + (r + 1.7)](2) = 13

(2r + 1.7)(2) = 13

4r + 3.4 = 13

4r = 9.6

r = 2.4 mph

r + 1.7 = 4.1 mph

5 0

2 years ago