2 years ago

Opaque magenta appears to be what color under yellow light?

Physics

1 answer:

Sauron [17]2 years ago

3 0

Answer:

The Answer is blue

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A large semi-truck is moving a house from one lot to another. The amount of force required to move the house 15.A horizontally a

dlinn [17]

Answer:

252J

Explanation:

Given parameters:

Distance = 72m

Force = 3.5N

Unknown:

Work done on the house = ?

Solution:

Work done is the force applied to move a body through a particular distance.

Work done = Force x distance

Now insert the parameters and solve;

Work done = 3.5 x 72 = 252J

5 0

2 years ago

A pendulum bob is made from a sphere filled with water. What would happen to the frequency of vibration of this pendulum if the

Nady [450]

Answer:

The frequency would not change because the frequency of a simple pendulum does not depend on mass.

Explanation:

7 0

2 years ago

An object is dropped from a bridge. A second object is thrown downwards 1.00 s later. They both reach the water 20.0 m below at

Deffense [45]

Answer:

$v_{o}=-14.60m/s$

Explanation:

<u>Kinematics equation for first Object:</u>

$y(t)=y_{o}+v_{o}t-1/2*g*t^{2}$

but:

$v_{o}=0m/s$ The initial velocity is zero

$y_{o}=20m$

it reach the water at in instant, t1, y(t)=0:

$0=y_{o}-1/2*g*t_{1}^{2}$

$t_{1}=\sqrt{2y_{o}/g}=\sqrt{2*20/9.81}=2.02s$

<u>Kinematics equation for the second Object:</u>

The initial velocity is zero

$y(t)=y_{o}+v_{o}t-1/2*g*t^{2}$

but:

$y_{o}=20m$

it reach the water at in instant, t2, y(t)=0. If the second object is thrown 1s later, t2=t1-1=1.02s

$0=y_{o}+v_{o}t_{2}-1/2*g*t_{2}^{2}$

$v_{o}=1/(t_{2})*(1/2*g*t_{2}^{2}-y_{o})=(1/1.02)*(1/2*9.81*1.02^{2}-20)=-14.60m/s$

The velocity is negative, because the object is thrown downwards.

6 0

2 years ago

a mass of 4 kilograms is paced onto a spring snd it stretches 0.2 meters. Why is the spring constant?

Ray Of Light [21]

Answer:

fgch

Explanation:

5 0

2 years ago

A half litre bottle has a mass of 80g.If contains 500cm3 of liquid when full.The bottle is filled with olive oil of density =0.9

ELEN [110]

Answer:

See below

Explanation:

a) 500 cm^3 * .90 gm/cm^3 = 450 gm of oil

b) 450 gm + 80 gm = 530 gm of oil and bottle

7 0

1 year ago