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3 years ago

PLEASE HELP 8th grade honors science

Physics

2 answers:

lora16 [44]3 years ago

7 0

Both of them are magnets coiled by wires.

1. The wire coiled in the first diagram, the wire is having current, Making the magnetic feild of the magnet more........

2. The wire coiling the magnet is here not having electric current making the magnetic feild smaller

Sophie [7]3 years ago

7 0

The diagram on the left is incorrect. Magnetic field lines do not start from a single point.

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give an example of how someone may be misjudged about their athletic ability due to diversity in sports (age,ethnicity,gender et

Ipatiy [6.2K]

Here is just a few:

1. white guys cant jump like black guys therefore white guys shouldn't play basketball
2. men are stronger than women so men should weight lift
3.football is a manly sport therefore woman should not play it

*hope this helps(these are just examples I am not expressing my beliefs

7 0

3 years ago

Monochromatic light of wavelength 580 nm passes through a single slit and the diffraction pattern is observed on a screen. Both

Nuetrik [128]

Answer:

Part a)

Width of the slit is

$a = 580 nm$

Part b)

Ratio of intensity is given as

$\frac{I}{I_o} = 0.81$

Explanation:

Part a)

As we know by the formula of diffraction we will have

$a sin\theta = \lambda$

so we have

$\theta = 90$

$\lambda = 580 nm$

so we will have

$a sin90 = 580 nm$

$a = 580 nm$

Part b)

As we know that the intensity in diffraction pattern is given as

$I = I_o (\frac{sin\theta}{\theta})^2$

$\frac{I}{I_o} = (\frac{sin\theta}{\theta})^2$

so for angle 45 degree

$\frac{I}{I_o} = (\frac{sin45}{\pi/4})^2$

$\frac{I}{I_o} = 0.81$

7 0

3 years ago

¿Cuál es la constante de proporcionalidad entre Y y X2?

djyliett [7]

This isn’t anything related to physics dude

5 0

3 years ago

A crew member is walking on a tugboat that is pulling a barge. The tugboat is moving at a constant speed upstream in a river tha

Marianna [84]

Answer:

v₁

Explanation:

A crew member is walking on a tugboat that is pulling a barge. The tugboat is moving at a constant speed upstream in a river that has a constant downstream current. The velocity of the crew member with respect to the tugboat is v₁. What is the velocity of the crew member with respect to the barge?

velocity is the change in displacement per time.

the velocity of the crew member with respect to the barge is v₁ since the barge is moving in the velocity of tugboat

4 0

3 years ago

A 1.6-kg block is attached to the end of a 2.0-m string to form a pendulum. The pendulum is released from rest when the string i

irinina [24]

Answer:

1002.2688 m/s

Explanation:

g = Acceleration due to gravity = 9.81 m/s²

h = The length of a string = 2 m

m = Mass of block = 1.6 kg

$m_2$ = Mass of bullet = 0.01 kg

Here, the potential energy of the fall will balance the kinetic energy of the bullet

$mgh=\dfrac{1}{2}mv^2\\\Rightarrow v=\sqrt{2gh}\\\Rightarrow v=\sqrt{2\times 9.81\times 2}\\\Rightarrow v=6.26418\ m/s$

Velocity of block is 6.26418 m/s

As the momentum of system is conserved we have

$mv=m_2u\\\Rightarrow u=\dfrac{mv}{m_2}\\\Rightarrow u=\dfrac{1.6\times 6.26418}{0.01}\\\Rightarrow u=1002.2688\ m/s$

The magnitude of velocity just before hitting the block is 1002.2688 m/s

7 0

3 years ago