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3 years ago

WILL MARK BRAINLIEST WORTH 50 POINTS

Physics

1 answer:

Margaret [11]3 years ago

8 0

Answer:

a) force = mass * acceleration

so,

F=87*9.8

=852.6 N (newtons)

b) in the real world, the force affecting the rste of fall is most likely Air Resistance!

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Q5: An ice skater moving at 12 m/s coasts

ExtremeBDS [4]

u = 0.077

Explanation:

Work done by friction is

Wf = ∆KE + ∆PE

-umgx = ∆KE,. ∆PE =0 (level ice surface)

-umgx = KEf - KEi = -(1/2)mv^2

Solving for u,

u = v^2/2gx

= (12 m/s)^2/2(9.8 m/s^2)(95 m)

= 0.077

8 0

3 years ago

PLEASE HELP! I think it's F but I'm not sure... Am I right???

IrinaVladis [17]

Answer:

Explanation:

F seems more like a corona

3 0

3 years ago

Read 2 more answers

Please help im on a timer!! 50 points!!

Crank

Strength of the magnetic field: C) 20 T

Explanation:

When a conductive wire moves in a region with magnetic field, an electromotive force is induced in the wire due to the phenomenon of electromagnetic induction.

If the wire moves perpendicular to the field, the magnitude of the induced emf in the wire is given by

$\epsilon=BLv$

where

B is the strength of the magnetic field

L is the length of the wire

v is the speed of the wire

For the wire in this problem, we have:

$\epsilon=12 V$ is the emf induced in the wire

v = 3.0 m/s is the speed of the wire

L = 0.20 m is its length

Solving for B, we find the strength of the magnetic field:

$B=\frac{\epsilon}{Lv}=\frac{12}{(0.20)(3.0)}=20 T$

Learn more about magnetic fields:

brainly.com/question/3874443

brainly.com/question/4240735

#LearnwithBrainly

5 0

4 years ago

Hello??..........................

777dan777 [17]

BlablablablabBlablabala

3 0

3 years ago

A plane traveling north at 100.0 km/h through the air gets caught in a 40.0 km/h crosswind blowing west. This turbulence caused

Nonamiya [84]

Answer:

The velocity $\vec{v}_{c/g}$ of the cart with respect to the ground is

$\vec{v}_{c/g}=-40\hat{x}+80\hat{y}\, km/h$

if we consider North the positive y-direction and East the positive x-direction.

Explanation:

We have for relative motion the following expression:

$\vec{v}_{c/g}=\vec{v}_{c/p}+\vec{v}_{p/g}$

Where $\vec{v}_{c/g}$ is the velocity of the cart with respect to the ground, $\vec{v}_{c/p}$ is the velocity of the cart with respect to the plane and $\vec{v}_{p/g}$ is the velocity of the plane with respect to the ground.

We find that:

$\vec{v}_{c/p}=-20\hat{y}$

$\vec{v}_{p/g}=-40\hat{x}+100\hat{y}$

Thus:

$\vec{v}_{c/g}=-20\hat{y}-40\hat{x}+100\hat{y}=-40\hat{x}+80\hat{y} \, km/h$

5 0

3 years ago

*****WILL MARK BRAINLIEST WORTH 50 POINTS*****

WILL MARK BRAINLIEST WORTH 50 POINTS