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3 years ago

15

An RV is traveling 60 km/h along a highway at night. A boy sitting near the driver of the RV turns a flashlight on and shines it

at another boy at the back end of the RV.

1 answer:

Varvara68 [4.7K]3 years ago

5 0

Answer:

300,000,000 and the second question is the same.

Explanation:

Edge

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The launching velocity of a missile is 20.0 m/s, and it is shot at 53º above the horizontal. What is the vertical component of t

Margaret [11]

The vertical component is given by the sin of the angle. So this is 20*sin(53)=15.97m/s

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3 years ago

How did the volcano Mt. St. Helens form?

charle [14.2K]

Given what we know about volcanic formations, we can conclude that the Mt. St. Helens volcano was formed by the process described in option D, "Subduction an oceanic continental convergent boundary caused a mountain range to form and magma to come to the surface".

Mt. St. Helens is a volcano that falls under the category of a stratovolcano. Stratovolcanoes are volcanoes that commonly form at subduction zones. This process forms chains or clusters of mountains along the boundaries of tectonic plates, where oceanic crust is pulled under another type of crust. This process tends to form mountain ranges which contain volcanoes, such as:

Cascade Range (To which Mt. St. Helens belongs)
Los Andes
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and so on.

To learn more visit:

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3 years ago

Which of the following is a source of thermal energy that is absorbed by Earth's atmosphere?

Mazyrski [523]

Answer:

100% of the energy entering earth's atmosphere comes from the sun. ~50% of the incoming energy is absorbed by the earth's surface i.e. the land and oceans.

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3 years ago

A rocket with a mass of 2.0 Ã 106 kg is designed to take off from the surface of the earth by burning fuel and ejecting it with

julsineya [31]

thrust force getting from the burning of mass should balance the weight of the rocket

here thrust force is given as

$F_t = v\frac{dm}{dt}$

now by force balance we can say

$mg = v \frac{dm}{dt}$

now plug in all values in this

$(2 \times 10^6)(9.8) = 3500 \times \frac{dm}{dt}$

$\frac{dm}{dt} = \frac{19.6 \times 10^6}{3500}$

$\frac{dm}{dt} = 5600 kg/s$

so rate of mass burning per second will be 5600 kg per second in order to lift up the rocket

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3 years ago

A small, rocky particle that moves through space and strikes a planet or moon is referred to as a/an

taurus [48]

A small, rocky particle that moves through space and strikes a planet or moon is referred to as a meteorite. A meteorite is a substantial part of the wreckage from a root such as an asteroid including comet, It is described as a meteoroid before its collision. Meteorite's intensity can change from petite to remarkably big.

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4 years ago