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m_a_m_a [10]
3 years ago
9

PLEASE HURRY!!!

Physics
2 answers:
lidiya [134]3 years ago
8 0

Answer:

The difference between the lower mantle and the oceanic crust is first their respective locations, pressure and temperature-- the pressure and temperature increases with depth in the earth this the mantle is more hot and under great pressure than the crust.

Explanation:

Harlamova29_29 [7]3 years ago
4 0

Answer:

Its C on edge

Explanation:

trust me

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A spacecraft in outer space increases velocity by firing its rockets. How can hot gases escaping from its rockets change the vel
Elena-2011 [213]

Answer:

Momentum is conserved.

Explanation:

-Momentum is conserved.

-By Newton's third law (For every action, there is an equal and opposite reaction.)-the change in momentum of gases in one direction must be balanced by an equal change in momentum of the spacecraft in the opposite direction.

3 0
3 years ago
Groups of students are making measurements of small cars rolling across a table. the class has measuring tapes with markings in
TiliK225 [7]

To find the accurate measurement of small cars, the teacher asks students to make all the measurements in centimeters.

Centimeters Measurements:

  • A centimeter is a metric unit of measurement used for measuring the length of an object, It is written as cm
  • Centimeter is one hundredth of a meter, 1 meter is 0.01 cm.

Inches measurements:

  • An inch can be defined as a unit of length in the customary system of measurement. Length in inches is either represented by in or ''.
  • 1 meter is equal to 39.37 inches

here, the cars are small objects.

The number of centimeters is always bigger,

because a centimeter unit is smaller than an inch unit, and it takes more of them when we are measuring.

Hence,

To find the accurate measurement of small cars, the teacher asks students to make all the measurements in centimeters.

Learn more about accurate measurement here:

<u>brainly.com/question/4119127</u>

<u />

#SPJ4

4 0
2 years ago
15 points! Middle School Physical Science.
solniwko [45]

Answer:

1st t=d/s

2nd s=d/t

5th d=st

are all of the variations I came up with

Explanation:

the original formula for speed is s=d/t

then, I created a ratio of s/1=d/t and cross multiplied to find d=st

then, I isolated the t in one side by dividing by s on both sides.

6 0
3 years ago
Read 2 more answers
Pls answer this ,today is last day of classes then I got finals soon lol
KIM [24]

Answer and Explanation:

The law of conversation of energy states that energy cannot be created or destroyed. The pendulum slows down and stops eventually not because the kinetic energy is destroyed, but it is transferred into sound and heat energy instead because there is air resistance and friction.

Kinetic energy => Gravitational potential energy (Loop but some energy transferring to heat and sound each time)

4 0
3 years ago
The coordinates of a particle in the metric​ xy-plane are differentiable functions of time t with StartFraction dx Over dt EndFr
Brut [27]

Answer:

\dfrac{dD}{dt}=-7.076\ m/s

Explanation:

It is given that,

The coordinates of a particle in the metric​ xy-plane are differentiable functions of time t are given by :

\dfrac{dx}{dt}=-6\ m/s

\dfrac{dy}{dt}=-4\ m/s

Let D is the distance from the origin. It is given by :

D^2=x^2+y^2

Differentiate above equation wrt t as:

2D\dfrac{dD}{dt}=2x\dfrac{dx}{dt}+2y\dfrac{dy}{dt}

D\dfrac{dD}{dt}=x\dfrac{dx}{dt}+y\dfrac{dy}{dt}.............(1)

The points are given as, (12,5). Calculating D from these points as :

D=\sqrt{12^2+5^2} =13\ m

Put all values in equation (1) as :

13\times \dfrac{dD}{dt}=12\times (-6)+5\times (-4)

\dfrac{dD}{dt}=-7.076\ m/s

So, the particle is moving away from the origin at the rate of 7.076 m/s. Hence, this is the required solution.

4 0
4 years ago
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