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3 years ago

If two measurements are very close to each other, then they are ____.

2 answers:

4 0

I'd say b, precise, here.
If there's an error somewhere in the experiment or project, then it is consistently .... wrong. So, just 'cos you measure something precisely, it doesn't mean that you've measured it accurately. Maybe an example would be a measurement of length. If you used a metal ruler at zero degrees C, you can measure to say half a millimetre. A series of measurements of the same object would give very similar readings. But, if you used same metal ruler at, say 100 celsius (implausible) then you'd probably get a different set of readings. 'cos of the expansion of the metal ruler.

Allisa [31]3 years ago

3 0

D accepted values because that's just how it is

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A mass on a spring oscillates with a period T. Part A If both the mass and the force constant of the spring are doubled, the new

garik1379 [7]

Answer:

The new time period will be T.

Explanation:

The time period in terms of spring constant and mass is given by :

$T=2\pi\sqrt{\dfrac{m}{k}}$

If mass and force constant is doubled, m' = 2m and k' = 2k

New time period is given by :

$T'=2\pi\sqrt{\dfrac{m'}{k'}}$

$T'=2\pi\sqrt{\dfrac{2m}{2k}}$

$T'=2\pi\sqrt{\dfrac{m}{k}}$

$T'=T$

So, the new period will remains the same. Hence, the correct option is (C).

4 0

3 years ago

In the qualifying round of the 50-yd freestyle in the sectional swimming championship, Dugan got an early lead by finishing the

Nata [24]

Answer:

v = 0

Explanation:

Given that,

Total distance is 50 yards

Dugan got an early lead by finishing the first 25.00 yd in 10.01 seconds

Dugan finished the return leg (25.00 yd distance) in 10.22 seconds.

We need to find Dugan's average velocity for the entire race. As he returns at the initial position. As a result, the net displacement is equal to 0. So,

Average velocity = net displacement/time

v = 0

Hence, his average velocity for the entire race is 0.

6 0

4 years ago

Excess radiation can cause cancer. true or false

RSB [31]

It would be true. Excess radiation causes cancer.

7 0

4 years ago

If you weigh 150 lbs. on the surface of Earth, how much would you weigh on Venus? On Mars?

Ghella [55]

Answer:

weight on Venus = 604.15 N

weight on Venus = 252.01 N

Explanation:

Given:

Weight on the earth , W = 150 lbs

now,

1 lbs = 4.45 N

thus,

W = 150 × 4.45 = 667.5 N

now, mass on the earth, m = 667.5/9.8 = 68.11 kg

now,

⇒ weight on Venus,

the acceleration due to gravity on venus = 8.87 m/s²

thus,

weight on Venus = mass × acceleration due to gravity on venus

weight on Venus = 68.11 × 8.87 = 604.15 N

⇒ weight on mars,

the acceleration due to gravity on mars = 3.70 m/s²

thus,

weight on Venus = mass × acceleration due to gravity on venus

weight on Venus = 68.11 × 3.70 = 252.01 N

7 0

4 years ago

How does comets differ from a asteroids

Temka [501]

Comets are made of icy material and asteroids are rocky bodies and are denser than. Hope this helps.

8 0

4 years ago