How to convert 1 meter into decimeters, milimeters, kilometers, micrometers etc..

A 500-g lump of clay is dropped onto a 1-kg cart moving at 60 cm/s. The clay is moving downward at 30 cm/s just before l dith t

viktelen [127]

Answer:

The speed of the cart and clay after the collision is 50 cm/s .

Explanation:

Given :

Mass of lump , m = 500 g = 0.5 kg .

Velocity of lump , v = 30 cm/s .

Mass of cart , M = 1 kg .

Velocity of cart , V = 60 cm/s .

We know by conservation of momentum :

$mv+MV=(m+M)v'$

Here , $v'$ is the speed of the cart and clay after the collision .

Putting all value in above equation .

We get :

$0.5\times 30+1\times 60=(0.5+1)\times v'\\\\v'=\dfrac{15+60}{1.5}\\\\v'=50\ cm/s$

Hence , this is the required solution .

3 0

4 years ago

Which statement describes the process of subduction? Convection currents pull a plate into the mantle. One plate slides beneath

mixas84 [53]

Answer:

Subduction is the geological process in which one plate moves under another due to gravitational pull. The regions where this process occurs called subduction zones.

A subduction is a tectonic plate which is made up of crust and upper layer of mantle. These two layers are called as lithosphere.

Example: South America, central America and cascade volcanoes. In which the oceanic plate descends beneath a continental plate.

7 0

4 years ago

Read 2 more answers

A ball is dropped from a height of 16 feet. Each time it drops h feet, it rebounds 0.81h feet. Find the total distance traveled

NeTakaya

The first drop makes the ball travel 16 m.
Then the maximum height decreases to 16 x 0.81
And the distance traveled is twice the distance traveled.
If we make a pattern, this forms a geometric progression in which the common ratio is 0.81 and the first term is 16.
The sum of this series: a / (1 - r)
= 16 ( 1 - 0.81)
= 84 feet
This is the upward height, and the ball returns every time so:
Total distance = 84 x 2
= 168 feet

7 0

3 years ago

Water's states of matter include steam, liquid and ice. What about water is the same in these states? What can you conclude abou

valentina_108 [34]

The molecules of the water do not change, because you have not added any other chemicals. that’s why water does not change it just only that liquid water is more dense than solid water (ice) ice is less dense.

6 0

3 years ago

An object acted on by three forces moves with constant velocity. One force acting on the object is in the positive x direction a

yulyashka [42]

Answer:

magnitude = 7.85 N

direction = 145.9° with respect to the axis x+

Explanation:

Hello

Since the body is moving with constant velocity it means that the sum of all the forces acting on it must be zero

Let F1, F2 and F3 be the three forces:

F1 = 6.5N i

F2 = -4.4 j

F3 = a i + b j

where i { j } stands for the unitary vector pointing towards x+ { y+ }, and a and b are the components of F3 in the x and y directions:

F1 + F2 + F3 = 0

F1 + F2 + F3 = (6.5 N i) + (- 4.4N j) + a i + b j = (6.5 N + a) i + (b - 4.4 N)j

each component must be zero, therefore:

6.5 + a = 0

-4.4 + b = 0

Therefore, the third force is

F3 = -6.5 N i + 4.4 N j

which has a magnitude of

|F3| = √(6.5^2 + 4.4^2) = √61.61 ≈ 7.85

and the angle (θ) with respect to the x+ axis is :

θ = arcos(-6.5/ 7.85) ≈ ±145.9°

The plus minus sign appeared because cos is an even function. Which sign we must consider? we can imagne it and see that the resulting vector F1+F2 points in the fourth quadrant, therefore F3 must points towards the second quadrant, and the angle 145° is in that quadrant.

Another way is to calculate the angle with respect to the y+ axis, and conclude based on that result the correct angle.

This is important since the component of y could be in the opposite direction and not affect the result of the angle with respect to the x axis

7 0

3 years ago