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3 years ago

What is the difference between kinematics and dynamics?.

1 answer:

5 0

Kinematics is the study of motion without regard for the cause. Dynamics: On the other hand, dynamics is the study of the causes of motion.

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How far from the lens must the film in a camera be, if the lens has a 35.0 mm focal length and is being used to photograph a flo

Lemur [1.5K]

Answer:

The film in a camera be is placed at a distance of 3.67 cm.

Explanation:

Given that,

Focal length of the lens, f = +35 mm = +3.5 cm

Object distance of the flower, u = -75 cm

Using lens formula to find the distance from the lens must the film in a camera be. Using lens formula as :

$\dfrac{1}{v}-\dfrac{1}{u}=\dfrac{1}{f}\\\\\dfrac{1}{v}=\dfrac{1}{f}+\dfrac{1}{u}\\\\\dfrac{1}{v}=\dfrac{1}{(3.5)}+\dfrac{1}{(-75)}\\\\v=3.67\ cm$

So, the film in a camera be is placed at a distance of 3.67 cm.

3 0

3 years ago

Acceleration is zero if

tester [92]

It’s doesn’t change meaning it’s 0

4 0

3 years ago

A certain car is capable of accelerating at a uniform rate of 0.85 m/s^2. What is the magnitude of the car's displacement as it

gogolik [260]

Solution: 85.11 m

Given:

acceleration of the car, $a= 0.85 m/s^{2}$

initial velocity, $u=83km/h=23.05 m/s$

final velocity, $v=94 km/h=26.11 m/s$

we need to find the displacement (s) of the car.

we would use the equation of motion:

$2as=v^{2}-u^{2}\\
\Rightarrow s=\frac{v^{2}-u^{2}}{2a} \\
\Rightarrow s=\frac{26.11^{2}-23.05^{2}}{2\times0.85}\\
\Rightarrow s=85.11 m$

hence, the displacement done by the car is = 85.11 m

7 0

3 years ago

Professor Frank Nabarro insists that all senior physics majors take his notorious physics aptitude test. The test is so tough th

yulyashka [42]

Answer:

0.5504

Explanation:

We can use Bay's theorem to solve this question

P( No physics career/fail) = P(No Physics career and fail)/P(Fail)

= P( Fail/ No physics career)×P( no physics career)/P( fail)

= $\frac{0.3\times1}{(0.7\times0.35)+(0.3\times1)}$

=0.5504

8 0

3 years ago

The IMA is always smaller than the AMA.<br><br> True<br> False

VMariaS [17]

Best answer must be false. Because the IMA it doesn't have always stay smaller than the AMA. Hope it helped you!

6 0

4 years ago