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marysya [2.9K]
4 years ago
14

Which is true about surface waves? please help

Physics
2 answers:
kenny6666 [7]4 years ago
6 0
I'm Guessing the answer would be D. sorry if I'm incorrect.
Inessa05 [86]4 years ago
3 0

Answer: The correct option is (C).

Explanation:

In longitudinal wave, the vibrations of the particles of the medium are parallel to the direction of the motion of the wave.

In transverse wave, the vibrations of the particles of the medium are perpendicular to the direction of the motion of the wave.

In surface wave, the disturbances which travel in the circular motion. The surface wave is neither longitudinal nor transverse. The particles of the medium are perpendicular and parallel to the direction of the energy transportation.

Therefore, the correct statement about the surface wave is option (C).

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2 rocks of different masses roll down a hill at the same speed which rock has more kinetic energy small one or big one ???
Sophie [7]

Kinetic energy depends on the mass and the speed of a moving object.

If the speeds are equal, then the rick with more mass has more kinetic energy.

5 0
3 years ago
Read 2 more answers
I've had several mental breakdowns please help me
sesenic [268]

Answer:

The efficiency of the system is 63.7 %

Explanation:

Given;

input power of the motor, = 1.5 kW = 1,500 W

mass of the car lifted, m = 1300 kg

height through which the car was lifted, h = 1.8 m

time, t = 24 s

The output power of the motor is calculated as;

Output Power = F x v

                        = (mg)  x (d/t)

                        = (1300 x 9.8) x (1.8 / 24)

                        = 12,740 x 0.075

                        = 955.5 W

The efficiency of the system is calculated as;

E = \frac{0utput \ power}{1nput \ power} \times \ 100\%\\\\E = \frac{955.5}{1500} \times \ 100\% \\\\E = 63.7 \ \%

The correct answer is 63.7%

4 0
3 years ago
A 50.0-kg wolf is running at 10.0 m/sec. What is the wolfs kinetic energy
Fiesta28 [93]
Kinetic energy = mass time squared speed divided by 2 
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4 0
3 years ago
Leah watches a toy car move across a table at a constant speed. The car moves across the table in one direction and falls off th
Sedbober [7]

In order to change the direction and speed, a net external force is required. A net external force is an unbalanced force which will change the direction and gives the speed in the opposite direction. Hence, its an unbalanced force from the joey that pushes the car in the other direction due to which it the car starts to move back to Leah. Without, unbalanced force there is not change in the direction of the car's motion.

Hence, option B is correct.

5 0
3 years ago
Read 2 more answers
A 50.0-turn circular coil of radius 5.00 cm can be oriented in any direction in a uniform magnetic field having a magnitude of 0
Blababa [14]

Answer:

The maximum torque in the coil is 4.9\times 10^{-3}\ N-m.

Explanation:

Given that,

Number of turns in the circular coil, N = 50

Radius of coil, r = 5 cm

Magnetic field, B = 0.5 T

Current in coil, I = 25 mA

We need to find the magnitude of the maximum possible torque exerted on the coil. The magnetic torque is given by :

\tau=NIAB\ \sin\theta

For maximum torque, \theta=90^{\circ}

\tau=NIAB\\\\\tau=50\times 25\times 10^{-3}\times \pi (0.05)^2\times 0.5\\\\\tau=4.9\times 10^{-3}\ N-m

So, the maximum torque in the coil is 4.9\times 10^{-3}\ N-m.

4 0
3 years ago
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