All categories

3 years ago

Please help me anyone with physics

Physics

1 answer:

dangina [55]2 years ago

4 0

Answer:

a) 0.01

b) total reading = main scale reading + fractional scale reading

c) 6.63mm

Explanation:

Total reading = 6.5 + 0.13

=6.63mm

You might be interested in

Ryan hypothesizes that darker colors heat up faster. he places a thermometer inside a red wool sock, a green cotton glove, and a

solmaris [256]

There's no "control" they all differ. If they were all exactly the same size shape and material it would be doable.

4 0

3 years ago

Read 2 more answers

A 2.00 kg block hangs from a spring balance calibrated in Newtons that is attached to the ceiling of an elevator.(a) What does t

tresset_1 [31]

Answer:

Part a)

$Reading = 2.00 kg$

Part b)

$Reading = 2.00 kg$

Part c)

$Reading = 4.04 kg$

Part d)

from t = 0 to t = 4.9 s

so the reading of the scale will be same as that of weight of the block

Then its speed will reduce to zero in next 3.2 s

from t = 4.9 to t = 8.1 s

The reading of the scale will be less than the actual mass

Explanation:

Part a)

When elevator is ascending with constant speed then we will have

$F_{net} = 0$

$T - mg = 0$

$T = mg$

So it will read same as that of the mass

$Reading = 2.00 kg$

Part b)

When elevator is decending with constant speed then we will have

$F_{net} = 0$

$T - mg = 0$

$T = mg$

So it will read same as that of the mass

$Reading = 2.00 kg$

Part c)

When elevator is ascending with constant speed 39 m/s and acceleration 10 m/s/s then we will have

$F_{net} = ma$

$T - mg = ma$

$T = mg + ma$

Reading is given as

$Reading = \frac{mg + ma}{g}$

$Reading = 2.00\frac{9.81 + 10}{9.81}$

$Reading = 4.04 kg$

Part d)

Here the speed of the elevator is constant initially

from t = 0 to t = 4.9 s

so the reading of the scale will be same as that of weight of the block

Then its speed will reduce to zero in next 3.2 s

from t = 4.9 to t = 8.1 s

The reading of the scale will be less than the actual mass

3 0

3 years ago

An 80 kg person jumps out of a plane. If the air resistance is 800 N, find the<br><br> Acceleration.

sertanlavr [38]

Answer:

The acceleration is 10 m/s²

Explanation:

The question seeks to show the relationship between force, mass and acceleration. Hence, the formula to be used here is that of force which is shown below

F = ma

where F is the force (800 N)

m is the mass (80 kg)

a is the acceleration (unknown)

From the formula above (Force = mass multiplied by acceleration)

800 N = 80 kg × a

a = 800 ÷ 80

a = 10 m/s²

4 0

3 years ago

Read 2 more answers

A rod made up of a single element is used to heat water using electricity. To which group does this element probably belong to?

aliina [53]

Nichrome is usually used as the rod to heat water using electricity. It is an example of Nickel and belongs to the element Nickel in the periodic table.

4 0

4 years ago

Read 2 more answers

A 1500-kg car traveling due north with a speed of 25 m/s collides head-on with a 4500-kg truck traveling due south with a speed

Goryan [66]

Answer:

OMG IM ON THE SAME QUESTION

Explanation:

8 0

3 years ago

Please help me anyone with physics ​

Please help me anyone with physics