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Artyom0805 [142]
3 years ago
7

Anyone willing to help?

Physics
2 answers:
grigory [225]3 years ago
5 0

Answer:

I think it is "A" because the wind systems are created by uneven heating of Earth's surface.It also may help form large global wind patterns.

Explanation:

Ierofanga [76]3 years ago
3 0
D is the answer reeeeeeeeeeetaaaaaaardddddddddddd
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The pickup truck has a changing velocity because the pickup truck
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travilng on a curve in the road

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What factor determines an object's momentum?
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Momentum = mass x velocity

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The mass of an object is determined by: weighing the object with a scale multiplying the height, width, and length measuring the
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3 years ago
You take the same 3 kg metal block and slide it along the floor, where the coefficient of friction is only 0.4. You release the
spin [16.1K]

Answer:

1.52905 seconds

4.58715 m

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

\mu = Coefficient of friction = 0.4

g = Acceleration due to gravity = 9.81 m/s²

a = Acceleration = \mu g

Equation of motion

v=u+at\\\Rightarrow t=\frac{v-u}{\mu g}\\\Rightarrow t=\frac{0-6}{-0.4\times 9.81}\\\Rightarrow t=1.52905\ s

It will take 1.52905 seconds for the block to slow down

v^2-u^2=2as\\\Rightarrow s=\frac{v^2-u^2}{2\mu g}\\\Rightarrow s=\frac{0^2-6^2}{2\times 0.4\times -9.81}\\\Rightarrow s=4.58715\ m

The block will travel 4.58715 m before it stops

7 0
3 years ago
A long solenoid has a radius of 2.0 cm and has 700 turns/m. If the current in the solenoid is decreasing at the rate of 8.0 A/s,
Brrunno [24]

Answer:

The magnitude of the induced electric field at a point 2.5 cm from the axis of the solenoid is 8.8 x 10⁻⁵ V/m

Explanation:

given information:

radius, r = 2.0 cm

N = 700 turns/m

decreasing rate, dI/dt = 9.0 A/s

the magnitude of the induced electric field at a point 2.5 cm (r = 2.5 cm = 0.025 m) from the axis of the solenoid?

the magnetic field at the center of solenoid

B = μ₀nI

where

B = magnetic field (T)

μ₀ = permeability (1.26× 10⁻⁶ T.m/A)

n = the number turn per unit length (turn/m)

I = current (A)

dB/dt = μ₀n dI/dt                                           (1)

now we calculate the induced electric field by using

E = \frac{1}{2}r\frac{dB}{dt}  

\frac{dB}{dt} = 2E/r                                                     (2)

where

E = the induced electric field (V/m)

we substitute the firs and second equation, thus

dB/dt = μ₀n dI/dt  

2E/r = μ₀n dI/dt  

E = (1/2) r μ₀n dI/dt

  = (1/2) (0.025) (1.26× 10⁻⁶) (700) (8)

  = 8.8 x 10⁻⁵ V/m

6 0
3 years ago
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