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3 years ago

PLEASE HELP ME!!!!!!!

Physics

1 answer:

melamori03 [73]3 years ago

6 0

This it you can do it boy or girl 

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If the density of wood is 0.5g/cm3 what is the mass of 1cm3

Licemer1 [7]

Answer:

O. 5 g

Explanation:

It literally says for every cm3 its 0.5 g

5 0

3 years ago

If a girl running along a straight road with a uniform velocity 1.5m/s,find her acceleration

Eddi Din [679]

Her acceleration is zero, because her velocity is not changing.

6 0

3 years ago

A 150 g ball and a 240 g ball are connected by a 33-cm-long, massless, rigid rod. The balls rotate about their center of mass at

stira [4]

Answer:

v= 3.18 m/s

Explanation:

Given that

m= 150 g = 0.15 kg

M= 240 g = 0.24 kg

Angular speed ,ω = 150 rpm

The speed in rad/s

$\omega =\dfrac{2\pi N}{60}$

$\omega =\dfrac{2\pi \times 150}{60}$

ω = 15.7 rad/s

The distance of center of mass from 150 g

$r=\dfrac{150\times 0+240\times 33}{150+240}\ cm$

r= 20.30 cm

The speed of the mass 150 g

v= ω r

v= 20.30 x 15.7 cm/s

v= 318.71 cm/s

v= 3.18 m/s

6 0

3 years ago

Driving at a safe speed is particularly important because kinetic energy __________.

oksian1 [2.3K]

The correct answer is
b. increases with the square of speed

In fact, the kinetic energy of a moving object is given by
 $K= \frac{1}{2}mv^2$
where m is the mass of the object and v is its speed. We see that the kinetic energy is directly proportional to the square of the speed, therefore option B is the correct one.

5 0

3 years ago

How is the earth a cracked hard boiled egg

leva [86]

Good question because although this earth going through hell the earth will never break because its solid
Tbh I don’t know how earth is still put together after so much effect

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3 years ago