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DerKrebs [107]
3 years ago
9

HELP ASAP!!!

Physics
1 answer:
N76 [4]3 years ago
8 0
The general trend is that electronegativity increases as you go up and to the right on the periodic table
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One strategy in a snowball fight is to throw
Oxana [17]

second question: How many seconds after the first snowball

should you throw the second so that they

arrive on target at the same time?

Answer in units of s.

Answer:

Part 1: 28°

Part 2: 1.367

Explanation:

Part 1:

Given: 62°  

Simple

θ = 90°- 62°

<u>θ = 28°</u>

Part 2:

Y-direction

Δy=v_{yo} t+\frac{1}{2} a_{y} t^{2}

0=[16.2sin(62)]t_{1}+1/2(-9.8)t_{1}^{2} \\

t_{1} =\frac{2[16.2sin(62)]}{9.8}

t_{1}=2.91913s

0=[16.2sin(28)]t_{2}+1/2(-9.8)t_{2}^{2}

t_{2} =\frac{2[16.2sin(28)]}{9.8}

t_{2}=1.55213s

Δt=t_{1}-t_{2}

Δt=2.91913-1.55213

<u>Δt= 1.367s</u>

Hope it helps :)

7 0
3 years ago
How long would it take a machine to do 5000 J of work if the power rating of the machine is 100 watts?
NeX [460]

Answer:

25 N; 250 W.

Explanation: Work Done

=

Force

×

Displacement

×

cos

(

The angle between Force and Displacement

)

So, Let's Assume the Force to be

x

Newtons.

So, According to The Sum,

×

x

x

⋅

100

=

2500

⇒

x

=

25

00

1

00

=

25

So, The force was

25

N

.

And, We also know,

Power

=

Work Done

Time

So,

The Power of the Machine =

2500

10

Watts

=

250

Watts

4 0
3 years ago
Im back and need help
const2013 [10]

Always here to help. Bring it!!!

7 0
3 years ago
A dentist used a light have wavelength 450nm what is the energy of the light
LenKa [72]

Answer:

≈ 4.41 x 10^-19

Explanation:

The formula for the energy of light is...

E = hc / λ

where 'h' is Planck's constant: 6.626 x 10^-34 Js

           'c' is the speed of light: 2.998 x 10^8 ms

       &  'λ' is the wavelength (in this case): 450 nm

1 nanometer (nm) = 1 x 10^-9m

E = (6.626 x 10^-34 Js)(2.998 x 10^8 ms) / (450nm)(1 m / 10^-9 nm)

E ≈ 4.41 x 10^-19 J

I think that's the answer and I hope it helps!

5 0
3 years ago
What is the electric field strength 7.50 x 10E-1 meters from a 2.8 x 10 E-3 C charged object?
Nadusha1986 [10]

Answer:hi

Explanation:

5 0
3 years ago
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