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lakkis [162]
3 years ago
10

What is required to cause acceleration

Physics
2 answers:
olganol [36]3 years ago
8 0
A force is required, because nothing would happen if there was no energy to start it.
notka56 [123]3 years ago
7 0
Acceleration means any change in speed or direction of motion. Any of those requires force.
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Why do engineers place tolerances on dimensions?
ser-zykov [4K]
<span>Engineers place tolerance on dimensions since the when engineers use tolerance, buildings and constructions projects like tall towers, roads, and bridges become more reliable, strong and stable. In harnessing tolerance, the end product that is made by the engineers, specifically buildings like schools, hospitals, malls and skyways are sturdy and dependable.</span>
4 0
3 years ago
A scuba diver and her gear displace a volume of 68.5 L and have a total mass of 71.8 kg . Part A What is the buoyant force on th
Luba_88 [7]

Answer:

A) Fb = 671.3 N

B) The diver will sink.

Explanation:

A)

The buoyant force applied on an object by a fluid is given by the following formula:

Fb = Vρg

where,

Fb = Buoyant Force = ?

V = Volume of the water displaced by the object = 68.5 L = 0.0685 m³

ρ = Density of Water = 1000 kg/m³

g = 9.8 m/s²

Therefore,

Fb = (0.0685 m³)(1000 kg/m³)(9.8 m/s²)

<u>Fb = 671.3 N</u>

B)

Now, in order to find out whether the diver sinks or float, we need to find weight of the diver with gear.

W = mg = (71.8 kg)(9.8 m/s²)

W = 703.64 N

Since, W > Fb. Therefore, the downward force of weight will make the diver sink.

<u>The diver will sink.</u>

8 0
3 years ago
3. The largest asteroid in the solar system is 1 Ceres. It has a mass of 9.3835
Ira Lisetskai [31]

Answer:

2.8351×10^7 N/kg

Explanation:

We know that,

W = mg -------(1)

where W = weight, m = mass, g = gravitational acceleration

Also from Newton's law of gravitation we know that,

F = GMm/r²

Where,

F = gravitational force,

G = universal gravitational constant

M,m = masses of object under gravitational influence

r = distance between the two center of masses.

Here we get

F = (Gm/r²)M -------(2)

From 1 and 2

The acceleration due to gravity = gravitational field intensity

So if you consider the gravitational field intensity at the surface of the asteroid,it is equal to the acceleration due to gravity at the same place.

So we get,

g = (6.67×10^-11)×9.3835×10^20/(47²) = 2.8351×10^7 N/kg

3 0
4 years ago
What are the relationships between position, velocity, and acceleration as it relates to time?
Ber [7]
Velocity = distance /time
acceleration = velocity / time
5 0
3 years ago
Read 2 more answers
Suppose you have a 34.9 m length of copper wire. If the wire is wrapped into a solenoid 0.240 m long and having a radius of 0.05
Nadusha1986 [10]

Answer:

the strength of the magnetic field inside the solenoid is 6.278 x 10⁻³ T.

Explanation:

Given;

length of the wire, = 34.9 m

length of solenoid, L = 0.24 m

radius of the solenoid, r = 0.051 m

current in the solenoid, I = 11.0 A

The number of turns of the wire is calculated as follow;

N = \frac{34.9}{2\pi \times 0.051} = 109 \ turns

The strength of the magnetic field inside the solenoid is calculated as follows;

B = \mu_0 (\frac{N}{L} )I\\\\B = 4\pi \times 10^{-7} \times (\frac{109}{0.24} )\times 11.0 \\\\B = 6.278 \times 10^{-3} \ T

Therefore, the strength of the magnetic field inside the solenoid is 6.278 x 10⁻³ T.

8 0
3 years ago
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