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klasskru [66]
3 years ago
7

The volume of the moon is about 33% of the volume of the earth.true or false

Physics
2 answers:
stealth61 [152]3 years ago
4 0
The moons volume is that of 2 percent of the earth.
Montano1993 [528]3 years ago
3 0

Answer:   False

Explanation:  The volume of the Moon is approximately 21.9 billion cubic kilometers.  If we compare the volume of the Moon with the volume of the Earth, which is about 1 trillion cubic kilometers, then it is possible to obscure the size and the volume of the Earth in relation to the Moon. In other words, when calculating, the Moon's volume is about 2% of the Earth's volume.

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a projectile is launched at an angle of 30 degrees and lands later at the same level. if it's initial speed is 50 m/s, solve for
Mrrafil [7]
using \: the \: formula \\ t = \frac{2u \sin( \alpha ) }{g} where \: u = initial \: speed \: \\ \alpha = angle \: of \: projection \\ g = acceleration \: due \: to \: gravity \\ \frac{2 \times 50 \times \sin(30) }{10} \\ \frac{100 \times 0.5}{10} = \frac{50}{10} = 5seconds

Maximum height
= (Usinα)^2/2g
(50*0.5)^2/20
25^2/20
625/20
=31.25metres
horizontal distance = Range= [U^2 * sin2α]/g
[50^2 * sin60]/10
2500 * 0.8660/10
2165/10=216.5metres
3 0
2 years ago
A dockworker applies a constant horizontal force of 90.0 N to a block of ice on a smooth horizontal floor. The frictional force
Oliga [24]

Answer:

The mass of the ice block is equal to 70.15 kg

Explanation:

The data for this exercise are as follows:

F=90 N

insignificant friction force

x=13 m

t=4.5 s

m=?

applying the equation of rectilinear motion we have:

x = xo + vot + at^2/2

where xo = initial distance =0

vo=initial velocity = 0

a is the acceleration

therefore the equation is:

x = at^2/2

Clearing a:

a=2x/t^2=(2x13)/(4.5^2)=1.283 m/s^2

we use Newton's second law to calculate the mass of the ice block:

F=ma

m=F/a = 90/1.283=70.15 kg

6 0
3 years ago
Read 2 more answers
an automobile engineer found that the impact of a truck colliding at 16 km/h with a concrete pillar caused the bumper to indent
Zolol [24]
<span>To find the acceleration we are given two facts to begin. The impact at 16 km/h and the dent of 6.4 cm, or 0.064 meters. In solving the problem uniform acceleration is assumed, which would mean the avg speed during the impact was 8 km/hr by taking 16/2. We know distance = rate*time (d=r*t) . So t = d / r, so 0.64/8 = 0.008hr for t. Now we can solve for acceleration by taking a = 16 / 0.008 = 2000 km/hr.</span>
8 0
3 years ago
1) Calculate the ideal efficiency of a heat engine that takes in energy at 800 K and expels heat to a
masha68 [24]

Answer:

Could you explain that more better?

Explanation:

3 0
3 years ago
Explain the relationship between velocity and acceleration. Are these scalar or vector quantities?
stiv31 [10]
A scalar is something that only has speed without a DIRECTION while a vector has direction. acceleration is a vector and mass is a scalar.
4 0
3 years ago
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