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3 years ago

Why did the scientific community initially reject Wegener's theory of continental drift?

Physics

2 answers:

MAVERICK [17]3 years ago

4 0

Answer:

Explanation:

zavuch27 [327]3 years ago

3 0

Answer:

A. Wegener could not explain what made the continents move.

Explanation:

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You are a member of an alpine rescue team and must get a box of supplies, with mass 3.00 kg , up an incline of constant slope an

Sever21 [200]

Answer:

v = 8.45 m/s

Explanation:

given,

mass = 3 kg

angle = 30.0°

vertical distance = 3.3 m

μ = 0.06

according to conservation of energy

KE(loss) = PE(gain) + Work done (against\ friction)..............(1)

frictional Force

$F_f = \mu N$

$F_f = \mu m g cos \theta$

work against friction

W = F d

$W = \mu m g cos \theta \times h l sin\theta$

$W = \dfrac{\mu m g \times h}{tan\theta}$

Potential energy

PE = mgh

$\dfrac{1}{2}mv^2= \dfrac{\mu mgh}{tan \theta}+ mgh$

$\dfrac{1}{2}v^2= \dfrac{0.06 \times 9.81 \times 3.3}{tan 30^0}+ 9.8\times 3.3$

v = 8.45 m/s

the minimum speed is equal to 8.45 m/s

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3 years ago

Why magnet has more force at poles than middle ? Don't steal from google

lisabon 2012 [21]

Middle is the furthest from each pole, there is magnetic force at pole as it is due to the Earth's magnetic core

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2 years ago

Read 2 more answers

A small car and an SUV are at a stoplight. The car has amass equal to half that of the SUV, and the SUV's engine canproduce a ma

Hatshy [7]

Answer:a) It is a tie

Explanation:

Given

mass of car is half of SUV

if mass of SUV is 2m so the mass of car is m

SUV can produce twice the force of car i.e. 2 F

so acceleration experienced by SUV

$a_{SUV}=\frac{2F}{2m}$

$a_{SUV}=\frac{F}{m}$

acceleration of Car

$a_{car}=\frac{F}{m}$

both start with zero initial velocity therefore after few second they will be having same velocity and share same position.

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3 years ago

Penetrative power of electromagnetic waves

Tems11 [23]

is there more to this? if so i would love to help you!!

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3 years ago

A man does 1500 J of work to pull a box of 150 N. what is the displacement of the box?

Assoli18 [71]

Work done=1500J
Force=150N
Displacement =?

We know

$\boxed{\sf Work\:Done=Force\times Displacement}$

$\\ \sf\longmapsto 1500=150\times Displacement$

$\\ \sf\longmapsto Displacement=\dfrac{1500}{150}$

$\\ \sf\longmapsto Displacement=10m$

5 0

2 years ago