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JulsSmile [24]
3 years ago
9

Shanti is riding on a train that is moving at a speed of 90 km/h. He is carrying a power cord for his phone that is 1.2 m long.

Physics
2 answers:
faltersainse [42]3 years ago
3 0

Answer:equal to 1.2 m

Explanation: i took the test

dalvyx [7]3 years ago
3 0

Answer:

D. equal to 1.2

Explanation:

on edg

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A suspended object A is attracted to a charged object B, can one conclude that A is charged? Explain
irinina [24]

Explanation:

In my view, when the Object A is attracted to a Charged object B. Object B should be Negatively or Positively charged. So Object B should be the Opposite charged according to the Object B

Example =

If Object B is Negatively Charged, the Object A should be Positively Charged

If the Object B is Positively Charged, the Object A should be Negatively Charged

Sometimes it can Mix as a Neutral as well

Hope this Helps

5 0
3 years ago
What does an unconformity in a sequence of rock layers reveal about geologic history?
andreev551 [17]
An unconformity, or abnormality in the layers of rocks, signifies that the process of layering was somehow interrupted. The only feasible choice for this would be (B), where erosion would have interrupted the layering process.
7 0
3 years ago
Read 2 more answers
Can someone please help!!
frosja888 [35]

Answer:

Weight needed to balance the bar is 8.5N

Explanation:

Given the weight of the bar is 8N

The length of the bar is 5m

The weight of the bar will be uniformly distributed over the entire span. We will consider this as a point load acting in the middle of span length, which is at a distance of 2.5m from both ends.

Now applying momentum equation about balanced load we get, (see attachment)

\sum m_i=0\\2(m)+8(1)-8(0.5)-7(3)=0\\2m+8-4-21=0\\2m-17=0\\2m=17\\m=\frac{17}{2}=8.5\\So,\ m=8.5N

7 0
3 years ago
How does a lever apply forces with advantage?
KATRIN_1 [288]

Answer:

quick maths

Explanation:

quick maths

3 0
3 years ago
Using dimensional analysis, show that energy can be calculated from the following energy equations. Hint, in SI, here we want Jo
anyanavicka [17]

Explanation:

1. The kinetic energy of any object is calculated as :

E=\dfrac{1}{2}mv^2...........(1)

Dimensional formula of energy, [E]=[ML^2T^{-2}]

Dimensional formula of mass is [M]

Dimensional formula of velocity, [v]=[LT^{-1}]

[ML^2T^{-2}]=\dfrac{1}{2}[M]([LT^{-1}])^2

So, [ML^2T^{-2}]=[ML^2T^{-2}]

LHS = RHS

2. The potential energy is given by :

E=mgh

Dimensional formula of mass is [M]

Dimensional formula of g is [LT^{-2}]

Dimensional formula of height is [L]

Dimensional formula of energy, [E]=[ML^2T^{-2}]

So, E=[M][LT^{-2}][L]

So, LHS = RHS

Hence, this is the required solution.

7 0
3 years ago
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