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AVprozaik [17]
3 years ago
8

Changing which factor would NOT have an influence on the kinetic energy of a moving van loaded with 100 kg bags mulch of with a

total mass of 1,500 kg. The vehicle is traveling across an open parking lot at a speed of 5 m/s.
Question 8 options:


A: direction the moving van is going across the parking lot.


B: increasing the rate of speed without altering the mass of the vehicle or its contents.


C: emptying the moving van one bag at a time at a constant rate.


D: adding more contents (increasing the overall mass) to the van while the van is in motion traveling 5 m
Physics
2 answers:
Lemur [1.5K]3 years ago
8 0

Answer:

A

Explanation:

i took the test

xenn [34]3 years ago
3 0

Answer:

A. The direction

Explanation:

I did the test lol

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A metal ring 5.00 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpend
labwork [276]

Answer:

Ein: 2.75*10^-3 N/C

Explanation:

The induced electric field can be calculated by using the following path integral:

\int E_{in} dl=-\frac{\Phi_B}{dt}

Where:

dl: diferencial of circumference of the ring

circumference of the ring = 2πr = 2π(5.00/2)=15.70cm = 0.157 m

ФB: magnetic flux = AB (A: area of the loop = πr^2 = 1.96*10^-3 m^2)

The electric field is always parallel to the dl vector. Then you have:

E_{in}\int dl=E_{in}(2\pi r)=E_{in}(0.157m)

Next, you take into account that the area of the ring is constant and that dB/dt = - 0.220T/s. Thus, you obtain:

E_{in}(0.157m)=-A\frac{dB}{dt}=-(1.96*10^{-3}m^2)(-0.220T/s)=4.31*10^{-4}m^2T/s\\\\E_{in}=\frac{4.31*10^{-4}m^2T/s}{0.157m}=2.75*10^{-3}\frac{N}{C}

hence, the induced electric field is 2.75*10^-3 N/C

8 0
3 years ago
Find the voltage drop (in volt) along a 93.4 meter long 10 gauge copper wire carrying acurrent of 72.5 A. The diameter of a 10 g
Sophie [7]

Answer: 5.41 V

Explanation:in order to explain this result we have to use the Ohm law given by:

ΔV=R*I where R is the resistance which is equal R= ρ*L/A . ρ is the resistivity, L the length of the wire and A is the cross section. I is the current.

Then we have

ΔV=ρ*L*I/A= 1.68 * 10^-8 Ωm*93.4 m*72.5A/2.1* 10^-5 m^2=5.41 V

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The answer would be A. Ostensible
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Stolb23 [73]

Answer:

speed of light waves change when they travel in air to aquarium because want's the light hits the water you see bunches of color along with bigger looking objects

Explanation:

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3 years ago
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Leni [432]

Answer:

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Explanation:

Waves can travel through medium and can be without medium.

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