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pishuonlain [190]
4 years ago
6

Which information is necessary to determine an object's speed?

Physics
2 answers:
ollegr [7]4 years ago
7 0
The total distance of the object has traveled and the time it took to get to that distance.

So A.)
lyudmila [28]4 years ago
4 0

Answer:

A

Explanation:

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A flat circular plate of copper has a radius of 0.262 m and a mass of 61.5 kg.
Evgesh-ka [11]

Answer:

0.031 m

Explanation:

Density of copper = ρ =  8960 kg/m³

r = Radius = 0.262 m

m = Mass of plate = 61.5 kg

v = Volume of plate = Volume of cylinder = πr²h

\rho=\frac{m}{v}\\\Rightarrow 8940=\frac{61.5}{\pi r^2h}\\\Rightarrow h=\frac{61.5}{\pi 0.262^2\times 8940}\\\Rightarrow h=0.031\ m

So, thickness of plate is 0.031 m

5 0
4 years ago
I don’t know how to explain this or if I am correct:(
Talja [164]

Answer:

c is correct

Explanation:

There are two equal forces on each sides of the rope. The greater opposing sides pull, the greater the magnitude of tension force along the rope.

4 0
3 years ago
What is Not an example of an machanical wave
Juli2301 [7.4K]

Answer:

Definitely without a doubt a pumpkin

6 0
3 years ago
Read 2 more answers
I would really appreciate the help on this pass paper question.
zvonat [6]

Answer:

Heat lost thru doors & windows = (100 - 75 - 5) = 20

20% is the fraction of heat lost thru doors and windows

One wants to obtain the largest savings per unit of cost

roof:

200 / 600 = 1/3

150 / 1000 = .15

40 / 2300 = .017

The largest of these is 1/3 so the most benefit would be obtained by insulating the roof

Since heat loss thru the roof depends on heat loss thru the attic, this is the most cost effective in reducing heat loss

The more the difference in temperature between the ceiling and roof (attic) the more heat will be lost thru the roof, so insulating the roof will decrease the heat loss of the attic

8 0
2 years ago
We can determine the ____________ of a wave when given the frequency and the wavelength.
kvasek [131]
Since the equation for frequency is:
frequency = velocity/wavelength, then the correct answer is B. velocity.
In order to calculate the velocity, we just need to multiply frequency and wavelength. 
7 0
4 years ago
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