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2 years ago

Can someone please help me ASAP???!!!

Physics

1 answer:

olganol [36]2 years ago

8 0

Answer: The answers are:

Explanation:

1. C

2. A

3. C

4. B

5. D

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A Cessna 150 aircraft has a lift-off speed of approximately 125 km/h. What minimum constant acceleration does this require if th

aivan3 [116]

Answer:

Part a)

$a = 3.65 m/s^2$

Part b)

$t = 9.5 s$

Part c)

$v_f = 55.1 m/s$

Explanation:

Part a)

As we know that it starts from rest and moves on runway by total distance 165 m

so we will have

$v_f^2 - v_i^2 = 2ad$

$v_f^2 - 0 = 2(a)(165)$

$v_f = 125 km/h = 34.7 m/s$

now we have

$a = 3.65 m/s^2$

Part b)

Now for take off time we will have

$v_f - v_i = at$

$34.7 - 0 = 3.65 t$

$t = 9.5 s$

Part c)

$v_f = v_i + at$

$v_f = 0 + (3.65)(15.1)$

$v_f = 55.1 m/s$

7 0

3 years ago

A loop of radius r = 3 cm is placed parallel to the xy-plane in a uniform magnetic field = (0.75 T) . The resistance of the loop

matrenka [14]

Answer:

i = 0.00077A

Explanation:

Given:

loop radius, r = 3.0 cm = 0.03 m

Area, A = π x r² = π x 0.03² = 0.0028 m²

Magnetic Field, B = 0.75 T

Loop resistance, R = 18 Ω

time, t = 0.15 seconds

Now,

the induced emf is given as:

EMF = - BA/t .......1

Likewise,

EMF = iR.......2

Equate 1 and 2

iR = - BA/t

i = - BA/tR

i = 0.75×0.0028/0.15×18

i = 0.0021/2.7

i = 0.00077A

8 0

3 years ago

Fast breeder reactor technology definition

mixas84 [53]

The definition is a nuclear reactor that generates more fissile material than it consumes.

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3 years ago

What is the effect on an electric current when the voltage is increased? An increase in voltage causes the flow of electric curr

Zina [86]

the answer is increase.

3 0

3 years ago

Read 2 more answers

A small block with mass 0.0350 kgkg slides in a vertical circle of radius 0.550 mm on the inside of a circular track. During one

Lisa [10]

Answer:

W_net = μ 5.58, μ = 0.1 W_net = 0.558 J

Explanation:

The work is defined by the related

W = F. d = F d cos θ

where bold indicates vectors.

In the case, the work of the friction force on a circular surface is requested.

The expression for the friction force is

fr = μ N

the friction force opposes the movement, therefore the angle is 180º and the cos 180 = -1

W = - fr d

the path traveled half the length of the circle

L = 2 π R

d = L / 2

d = π R

we substitute

W = - μ N d

Total work is initial to

W_neto = - μ π R (N_b - N_a)

let's calculate

W_net = - μ π 0.550 (0.670 - 3.90)

W_net = μ 5.58

for the complete calculation it is necessary to know the friction coefficient, if we assume that μ = 0.1

W_net = 0.1 5.58

W_net = 0.558 J

7 0

3 years ago