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cluponka [151]
4 years ago
10

Taking a quiz a little help please!??

Physics
2 answers:
shtirl [24]4 years ago
5 0
The correct answer is b).
weqwewe [10]4 years ago
4 0
The answer is B Wave X and Wave Y are electromagnetic waves, and Wave Z is a mechanical wave.
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The transformer supplying power to an artist's light sculpture provides 9600-V AC when supplied by 120-V AC. If there are 100 tu
jarptica [38.1K]

Answer:

1.25 turns

Explanation:

From Transformer equation,

Ns/Np = Vs/Vp............................ Equation 1

Where Ns = Secondary turns, Np = Primary turns, Vs = secondary Voltage, Vp = Primary Voltage.

make Ns the subject of the equation  1

Ns = NpVs/Vp.......................... Equation 2

Given: Np = 100 turns, Vp = 120 V, Vs = 9600 V

Substitute into equation 2

Ns = 100(120)/9600

Ns = 1.25  turns.

Hence the are 1.25 turns in the  secondary coil = 1.25 turns

5 0
3 years ago
Block m1 of mass 2 m and velocity v0 is traveling to the right (+x) and makes an elastic head-on collision with block m2 of mass
OLga [1]
Ness awaits you sir, please be theoretical and positive eeeeeeeee
7 0
4 years ago
Anyone know this one?
liraira [26]

B. cork

A cork is NOT a fluid. Any substance that flows is considered a fluid.

5 0
4 years ago
Read 2 more answers
You wish to buy a motor that will be used to lift a 10-kg bundle of shingles from the ground to the roof of a house. The shingle
gogolik [260]

Answer:

\tau=19.21\ N-m

Explanation:

It is given that,

Mass of bundle of shingles, m = 10 kg

Upward acceleration of the shingles, a=1.5\ m/s^2

The radius of the motor of the pulley, r = 0.17 m

Let T is the tension acting on the shingles when it is lifted up. It can be calculated as :

T-mg=ma

T=m(g+a)

T=10\times (9.8+1.5)

T = 113 N

Let \tau is the minimum torque that the motor must be able to provide. It is given by :

\tau=r\times T

\tau=0.17\times 113

\tau=19.21\ N-m

So, the minimum value of torque is 19.21 N-m. Hence, this is the required solution.

4 0
3 years ago
If you are driving your car at 45.0 miles per hour, and you have been driving 2.50 hours, how far has your car gone?
Greeley [361]

Answer:

113 miles

Explanation:

45.00 x 2.50= 1.12.5 so 113 miles in 2.50 hours

5 0
3 years ago
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