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never [62]
3 years ago
15

Which statement about types of waves and energy is correct?

Physics
2 answers:
kolezko [41]3 years ago
8 0
The answer is D I’ve had this one before
evablogger [386]3 years ago
6 0

Answer:

I think it's D and good luck

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While passing a slower car on the highway, you accelerate uniformly from 20.1 m/s to 33.2 m/s in a time of 10.6 s. How far do yo
BaLLatris [955]

Answer:

282 m

Explanation:

Given:

v₀ = 20.1 m/s

v = 33.2 m/s

t = 10.6 s

Find: Δx

Δx = ½ (v + v₀) t

Δx = ½ (33.2 m/s + 20.1 m/s) (10.6 s)

Δx ≈ 282 m

5 0
4 years ago
Read 2 more answers
Why does atomic radius decrease from left to right?
victus00 [196]
Because the effective charge of the nucleus increase from left to eight due to the increasing number of protons.

The greater charge pulls the electrons closer to the nucleus, decreasing the radius.
7 0
4 years ago
What is the potential difference per unit length between two infinitely long concentric cylindrical shells with inner radius 1.5
Vinil7 [7]

Answer:

165.8 V/m

Explanation:

The capacitance of a long concentric cylindrical shell of length, L and inner radius, a and outer radius, b is C = 2πε₀L/㏑(b/a)

Since the charge on the cylindrical shells, Q = CV where V = the potential difference across the capacitor(which is the potential difference between the concentric cylindrical shells)

V = Q/C

V = Q ÷ 2πε₀L/㏑(b/a)

V = Q㏑(b/a)/2πε₀L

So, the potential difference per unit length V' is

V' = V/L = Q㏑(b/a)/2πε₀

Given that a = inner radius = 1.5 cm, b = outer radius = 5.6 cm and Q = 7.0 nC = 7.0 × 10⁻⁹ C and ε₀ = 8.854 × 10⁻¹² F/m substituting the values of the variables into the equation, we have

V' = Q㏑(b/a)/2πε₀

V' = 7.0 × 10⁻⁹ C㏑(5.6 cm/1.5 cm)/(2π × 8.854 × 10⁻¹² F/m)

V' = 7.0 × 10⁻⁹ C㏑(3.733)/(55.631 × 10⁻¹² F/m)

V' = 7.0 × 10⁻⁹ C × 1.3173/(55.631 × 10⁻¹² F/m)

V' = 9.2211 × 10⁻⁹ C/(55.631 × 10⁻¹² F/m)

V' = 0.16575 × 10³ V/m

V' = 165.75 V/m

V' ≅ 165.8 V/m

6 0
3 years ago
from the edge of the rooftop of a building, a boy thros a stone at an angle of 25 above the horizontal. The stone hits the groun
ella [17]

Answer:38.675 m/s

Explanation:

\theta =25^{\circ}

t=4.2 s

R_x=105m

Solving in x direction

R_x=ut+\frac{1}{2}\left ( 0\right )t^2

105=ucos25\times 4.2

ucos25=25

u=27.584 m/s

Initial velocity in vertical direction usin25

Let h be the height of Rooftop

h=\left ( -usin25\right )4.2+\frac{1}{2} \left ( 9.8\right )\left ( 4.2\right )^2

h=37.47 m

Therefore final vertical velocity is v_{vf}^2-\left ( usin25\right )^2=2\times 9.81\times 37.47

v_{vf}=29.51 m/s

Final Resultant velocity

V_{final}=\sqrt{29.51^2+24.99^2}

V_{final}=38.675 m/s

6 0
4 years ago
Which psychologist helped pioneer the cognitive perspective?
Tema [17]
George Miller. he provided two very important ideas with respect to cognition. The first regards short term memory, while the second one is planning (TOTE). He set the stage for considering humans behavior as a set of responses that occur hierarchically. 
3 0
3 years ago
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