3 years ago

Is this right? Please help me

Physics

2 answers:

algol [13]3 years ago

6 0

Yes because the nature vs nurture debate is what is explained in the question.

morpeh [17]3 years ago

4 0

Answer:

yes

Explanation:

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inysia [295]

Answer: force of gravity is 885N

Explanation:

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3 years ago

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The slope of a position-timw graph can be used to find the moving objects.....?

Fofino [41]

Answer:

Velocity

Explanation:

The slope of a position-time graph gives velocity of a moving object.

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3 years ago

from the edge of the rooftop of a building, a boy thros a stone at an angle of 25 above the horizontal. The stone hits the groun

ella [17]

Answer:38.675 m/s

Explanation:

$\theta =25^{\circ}$

t=4.2 s

$R_x=105m$

Solving in x direction

$R_x=ut+\frac{1}{2}\left ( 0\right )t^2$

$105=ucos25\times 4.2$

ucos25=25

u=27.584 m/s

Initial velocity in vertical direction usin25

Let h be the height of Rooftop

$h=\left ( -usin25\right )4.2+\frac{1}{2} \left ( 9.8\right )\left ( 4.2\right )^2$

h=37.47 m

Therefore final vertical velocity is $v_{vf}^2-\left ( usin25\right )^2=2\times 9.81\times 37.47$

$v_{vf}$ =29.51 m/s

Final Resultant velocity

$V_{final}=\sqrt{29.51^2+24.99^2}$

$V_{final}=38.675 m/s$

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4 years ago

You want a special device to keep coffee warm what type of electromagnetic waves would be useful

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Microwaves at the specific frequency where vibrates water molecules

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4 years ago

What is the energy of a photon whose frequency is 6.0 x 1020 hz?

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The energy in a photon is given by the formula, E=hf
Where h(plank constant)=6.63×10∧-34Js and
f = frequency of the photon

So the energy of the photon is;
E=(6.63×10∧-34) × (6.0×10∧20)

= 3.978×10∧-13J

5 0

3 years ago