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2 years ago

A bird flies at a speed of 2.3 m/s if it has 14 j of kinetic energy what is the mass

2 answers:

7 0

Kinetic Energy = 1/2 * mv²

Kinetic Energy = 14 J, v = 2.3 m/s , m = ?

14 = 1/2 * m* 2.3²

14 = 0.5*m*2.3*2.3

m = 14 / (0.5*2.3*2.3)

m = 5.29 kg.

Mass = 5.29 kg.

Galina-37 [17]2 years ago

6 0

Answer: 5.28kg

Explanation:

Kinetic energy is the energy possessed by a body due to virtue of its motion.

Kinetic energy = 1/2MV²

Where M is the mass of the body

V is the velocity

Given Kinetic energy = 14Joules

Velocity = 2.3m/s

Substituting this values into the formula to get mass,

14 = 1/2M(2.3)²

14 = 2.65M

M = 14/2.65

M = 5.28kg

The mass of the bird is 5.28kg

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Answer:

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We need to find the maximum height of the glove. Let it is equal to h. Using equation of kinematics. At the maximum height v = 0

$v^2-u^2=2ah$ , h is the maximum height and a = -g

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2 years ago

A solenoid has a radius Rs = 14.0 cm, length L = 3.50 m, and Ns = 6500 turns. The current in the solenoid decreases at the rate

babymother [125]

Answer:

E = 58.7 V/m

Explanation:

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now we have

$\phi = N(\mu_o N i/L)(\pi R_s^2)$

now the induced EMF is rate of change in magnetic flux

$EMF = \frac{d\phi}{dt} = \mu_o N^2 \pi R_s^2 \frac{di}{dt}/L$

now for induced electric field in the coil is linked with the EMF as

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$E(2\pi r_c) = \mu_o N^2 \pi R_s^2 \frac{di}{dt}/L$

$E = \frac{\mu_o N^2 R_s^2 \frac{di}{dt}}{2 r_c L}$

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2 years ago

The flow of electrons through a circuit is measured in which of the following units? A. electrical pressure B. amperes C. volts

damaskus [11]

The total quantity of electrons that have flowed through a circuit is a
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1 Ampere is 1 Coulomb of charge per second.

8 0

3 years ago

According to the first rule, if a force pulls on one end of a rope, the tension in the rope equals the magnitude of the pulling

mixer [17]

Answer:

Explanation:

Here in the question the mass of the pulley is zero, hence, the tension in the cable throughout is same.

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