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3 years ago

6

Explain Alfred wegener's hypothesis

1 answer:

grandymaker [24]3 years ago

8 0

He proposed the theory of Continental Drift. He believed that all of the continents were once joined together in a super continent he called Pangea (not sure if that's spelled right I studied this awhile ago). He proved this by showing similarities in fossils in completely different continents and showing how well the continents could fit together.

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A race car has a mass of 820 kg. It starts from rest and travels 50.0m in 3.0s. The car is uniformly accelerated during the enti

Contact [7]

A=DELTAv/DELTAt=50/3
f=ma=820.50/3

7 0

3 years ago

During the execution of a play, a football player carries the ball for a distance of 33 m in the direction 58° north of east. To

podryga [215]

Answer:28 m

Explanation:

Given

Direction is $58^{\circ}$ North of east i.e. $58 ^{\circ}$ with x axis

Also ball moved by 33 m

therefore its east component is 33cos58=17.48 m

Northward component $=33sin58=27.98 m\approx 28 m$

8 0

3 years ago

When the resistance in a circuit remains constant, how are the voltage and current related?

solmaris [256]

V=IR, therefore when resistance is constant the voltage and current are directly proportional

6 0

4 years ago

Read 2 more answers

A stone initially moving at 8.0 m/s on a level surface comes to rest due to friction after it travels 11 m. What is the coeffici

Ivenika [448]

Answer:

Coefficient of friction will be 0.296

Explanation:

We have given initial speed of the stone u = 8 m /sec

It comes to rest so final speed v = 0 m /sec

Distance traveled before coming to rest s = 11 m

According to third equation of motion

$v^2=u^2+2as$

So $0^2=8^2+2\times a\times 11$

$a=\frac{-64}{22}=-2.90m/sec^2$

Acceleration due to gravity $g=9.8m/sec^2$

We know that acceleration is given by

$a=\mu g$

So $2.90=9.8\times \mu \\$

$\mu =\frac{2.9}{9.8}=0.296$

So coefficient of friction will be 0.296

3 0

3 years ago

Sonja [21]

The answer would be 0.21 i believe if you use something we called F/Ma in grade school

6 0

3 years ago