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Sindrei [870]
4 years ago
9

Two material objects cannot occupy the same space at the same time, but two different disturbances of matter can. True or False?

Physics
2 answers:
jarptica [38.1K]4 years ago
7 0

Answer:

false GOD LOVES YOU YES HE DOSE

Explanation:

HOW OLD ARE YOU CHAT YOUR AGE PLEASE

Alex777 [14]4 years ago
3 0

Answer:

false

Explanation:

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A rectangular coil with 50 turns of conducting wire and a total resistance of 10.0 Ω initially lies in the yz-plane at time t =
castortr0y [4]

Answer:

a) 43.20V

b) 2.71W/s

c) 40.25s

d) 7.77Nm

Explanation:

(a) The emf of a rotating coil with N turns is given by:

emf=NBA\omega sin(\omega t)

N: turns

B: magnitude of the magnetic field

A: area

w: angular velocity

the emf max is given by:

emf_{max}=NBA\omega=(50)(1.80T)(0.200m*0.100m)(24.0rad/s)\\\\emf_{max}=43.20V

(b) the maximum rate of change of the magnetic flux is given by:

\frac{d\Phi_B}{dt}=\frac{d(A\cdot B)}{dt}=\frac{d}{dt}(ABcos\omega t)=AB\omega sin(\omega t)\\\\\frac{d\Phi_B}{dt}_{max}=(\pi(0.200*0.100))(1.80T)(24.0rad/s)=2.71\frac{W}{s}

(c) emf(t=0.050s)=(50)(1.80T)(0.200m*0.100m)(24rad/s)sin(24.0rad/s(0.050s))\\\\emf(t=0.050s)=40.26V

(d) The torque is given by:

\tau=NABIsin\theta\\\\NAB\omega=emf_{max}\\\\\tau=\frac{emf_{max}}{\omega}\frac{emf_{max}}{R}\\\\\tau=\frac{(43.20V)^2}{(24.0rad/s)(10.0\Omega)}=7.77Nm

3 0
3 years ago
A diver comes off a board with arms straight up and legs straight down, giving her a moment of inertia about her rotation axis o
mihalych1998 [28]

Answer:

θ₁ = 0.5 revolution

Explanation:

We will use the conservation of angular momentum as follows:

L_1=L_2\\I_1\omega_1=I_2\omega_2

where,

I₁ = initial moment of inertia = 18 kg.m²

I₂ = Final moment of inertia = 3.6 kg.m²

ω₁ = initial angular velocity = ?

ω₂ = Final Angular velocity = \frac{\theta_2}{t_2} = \frac{2\ rev}{1.2\ s} = 1.67 rev/s

Therefore,

(18\ kg.m^2)\omega_1 = (3.6\ kg.m^2)(1.67\ rev/s)\\\\\omega_1 = \frac{(3.6\ kg.m^2)(1.67\ rev/s)}{(18\ kg.m^2)}\\\\\omega_1 = \frac{\theta_1}{t_1} =  0.333\ rev/s\\\\\theta_1 = (0.333\ rev/s)t_1

where,

θ₁ = revolutions if she had not tucked at all = ?

t₁ = time = 1.5 s

Therefore,

\theta_1 = (0.333\ rev/s)(1.5\ s)\\

<u>θ₁ = 0.5 revolution</u>

4 0
3 years ago
How can fluid friction be decreased?
fgiga [73]

Answer: by giving special shapes called streamlined shape to the objects

Explanation:

5 0
3 years ago
To make ice, a freezer that is a reverse Carnot engine extracts 37 kJ as heat at -17°C during each cycle, with coefficient of pe
Dvinal [7]

Answer:

a) 6.4 kJ

b) 43.4 kJ

Explanation:

a)

Q_{a} = Heat absorbed = 37 kJ

β  = Coefficient of performance = 5.8

W = Work done

Heat absorbed is given as

Q_{a} = β W

37 = (5.8) W

W = 6.4 kJ

b)

Q  = work per cycle required

Q  = Q_{a} + W

Q  = 37 + 6.4

Q  = 43.4 kJ

5 0
3 years ago
The centers of a 15 kg lead ball and a 90 g lead ball are separated by 11 cm. part a what gravitational force does each exert on
Black_prince [1.1K]
The gravitational force between the two objects is calculated through the equation,

      F = Gm₁m₂/d²

where F is the gravitational force, G is constant (equal to 6.67 x 10^-11), m₁ and m₂ are masses in kg and d is distance is meters. 

Substituting the known values,

    F = (6.67 x 10^-11)(15 kg)(0.090 kg)/ (0.11 m)²

    F = 7.441 x 10^-9 N

ANSWER: 7.441 x 10^-9 N
8 0
3 years ago
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