1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Softa [21]
3 years ago
9

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

Physics
2 answers:
Sidana [21]3 years ago
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]3 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

You might be interested in
Steam enters a counterflow heat exchanger operating at steady state at 0.07 MPa with a specific enthalpy of 2431.6 kJ/kg and exi
PIT_PIT [208]

Answer:

Explanation:

Given:

Steam Mass rate, ms = 1.5 kg/min

= 1.5 kg/min × 1 min/60 sec

= 0.025 kg/s

Air Mass rate, ma = 100 kg/min

= 100 kg/min × 1 min/60 sec

= 1.67 kg/s

A.

Extracting the specific enthalpy and temperature values from property table of “Saturated water – Pressure table” which corresponds to temperature at 0.07 MPa.

xf, quality = 0.9.

Tsat = 89.9°C

hf = 376.57 kJ/kg

hfg = 2283.38 kJ/kg

Using the equation for specific enthalpy,

hi = hf + (hfg × xf)

= 376.57 + (2283.38 × 0.9)

= 2431.552 kJ/kg

The specific enthalpy of the outlet, h2 = hf

= 376.57 kJ/kg

B.

Rate of enthalpy (heat exchange), Q = mass rate, ms × change in specific enthalpy

= ms × (hi - h2)

= 0.025 × (2431.552 - 376.57)

= 0.025 × 2055.042

= 51.37455 kW

= 51.38 kW.

5 0
2 years ago
Me amor
Oxana [17]

Answer:

jajajaja

Explanation:

7 0
2 years ago
Does the under water pressure depend on the molecules of the air or what does it depend on
miskamm [114]

Answer:the pressure depends on gas and it will be half as much underwater

Explanation:

Water pressure increases with the depth of the water. This is because the weight of the column of water above the object increases. But a large, shallow pond may have more water in it than a small, deep pond.

This is due to an increase in hydrostatic pressure, the force per unit area exerted by a liquid on an object. The deeper you go under the sea, the greater the pressure of the water pushing down on you. For every 33 feet (10.06 meters) you go down, the pressure increases by one atmosphere .

4 0
3 years ago
A substance freezes at -58c therefore substance melts at ?
Yanka [14]
The freezing point is the same as the melting point.

If it freezes at -58°C, hence the melting point is also <span>-58°C.</span>
3 0
2 years ago
What part of the visible light spectrum produces the most light?
fomenos

Answer: all colors

.......

7 0
2 years ago
Other questions:
  • Using the formula 1/2 (m x v2), what is the kinetic energy of a 4 kg rock falling through the air at 5 m/s
    8·1 answer
  • A capacitor is charged until it holds 5.0 j of energy. it is then connected across a 10-kω resistor. in 13.6 ms , the resistor d
    5·1 answer
  • A car is traveling at 16 m/s^2
    15·1 answer
  • How do you calculate the rate of change of velocity
    6·1 answer
  • When a rubber band is pulled back on your finger but not yet let go how is that potential energy?
    6·1 answer
  • Alcohol consumption slows people's reaction times. In a controlled government test, it takes a certain driver t1=0.39 s to hit t
    13·2 answers
  • For a snowboard jumper in the air, what force or forces will be most important for modeling the motion?
    7·1 answer
  • Write how gravity and the mass of the pack affected the motion of the pack when it was thrown at different forces.
    6·1 answer
  • Map.
    7·1 answer
  • 11. From this lab we can conclude that a) the heat transferred when objects are rubbed together creates an energy that can cause
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!