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
ANTONII [103]
4 years ago
15

Which bullet will hit the ground first ?

Physics
1 answer:
TEA [102]4 years ago
5 0

Answer:

they hit at the same time

Explanation:

Gravity works on both bullets the same.

You might be interested in
Solar radiation is made up of light energy. Light energy can be separated by wavelength and frequency into the electromagnetic s
Sati [7]

Answer:

visible light

Explanation:

we can not see with out visibl e light

6 0
3 years ago
Read 2 more answers
The earth rotates once per day about an axis passing through the north and south poles. True or False
alexandr402 [8]

Answer: False.

Explanation: The Earth rotates once per day in direction from East to West. The rotation of the Earth daily is responsible for day and night experienced, the areas of the Earth facing the Sun experiences day time while the areas of the Earth away from the Sun in the Earth's shadow experiences night time.

While the revolution of the Earth around the gives rise to a year, as it takes 365 days for the Earth to go round the sun.

5 0
3 years ago
Two long, parallel, current-carrying wires lie in an xy-plane. The first wire lies on the line y = 0.300 m and carries a current
Marrrta [24]

Answer:

Explanation:

Since the wires attract each other , the direction of current will be same in both the wires .

Let I be current in wire which is along x - axis

force of attraction per unit length between the two current carrying wire is given by

\frac{\mu_0}{4\pi}  x \frac{2 I_1\times I_2}{d}

where I₁ and I₂ are currents in the wires and d is distance between the two

Putting the given values

285 x 10⁻⁶ = 10⁻⁷ x \frac{2\times25.5\times I_2}{.3}

I₂ = 16.76 A

Current in the wire along x axis is 16.76 A

To find point where magnetic field is zero due the these wires

The point will lie between the two wires  as current is in the same direction.

Let at y = y , the neutral point lies

k 2 x  \frac{16.76}{y} = k 2 x \frac{25.5}{.3-y}

25.5y = 16.76 x .3 - 16.76y

42.26 y = 5.028

y = .119

= .12 m

3 0
3 years ago
A counterflow double-pipe heat exchanger is used to heat water from 20°C to 80°C at a rate of 1.2 kg/s. The heating is to be com
bixtya [17]

Answer:L=109.16 m

Explanation:

Given

initial temperature =20^{\circ}C

Final Temperature =80^{\circ}C

mass flow rate of cold fluid \dot{m_c}=1.2 kg/s

Initial Geothermal water temperature T_h_i=160^{\circ}C

Let final Temperature be T

mass flow rate of geothermal water \dot{m_h}=2 kg/s

diameter of inner wall d_i=1.5 cm

U_{overall}=640 W/m^2K

specific heat of water c=4.18 kJ/kg-K

balancing energy

Heat lost by hot fluid=heat gained by cold Fluid

\dot{m_c}c(T_h_i-T_h_e)= \dot{m_h}c(80-20)

2\times (160-T)=1.2\times (80-20)

160-T=36

T=124^{\circ}C

As heat exchanger is counter flow therefore

\Delta T_1=160-80=80^{\circ}C

\Delta T_2=124-20=104^{\circ}C

LMTD=\frac{\Delta T_1-\Delta T_2}{\ln (\frac{\Delta T_1}{\Delta T_2})}

LMTD=\frac{80-104}{\ln \frac{80}{104}}

LMTD=91.49^{\circ}C

heat lost or gain by Fluid is equal to heat transfer in the heat exchanger

\dot{m_c}c(80-20)=U\cdot A\cdot (LMTD)

A=\frac{1.2\times 4.184\times 1000\times 60}{640\times 91.49}=5.144 m^2

A=\pi DL=5.144

L=\frac{5.144}{\pi \times 0.015}

L=109.16 m

6 0
3 years ago
What is the importance of protein to the health of a human being
Alexeev081 [22]
Better health is central to human happiness and well-being. It also makes an important contribution to economic progress, as healthy populations live longer, are more productive, and save more. Many factors influence health status and a country's ability to provide quality health services for its people.
5 0
3 years ago
Other questions:
  • If you pour whisky over ice, the ice will cool the drink, but it will also dilute it. A solution is to use whisky stones. Suppos
    12·2 answers
  • If the mass of the object were doubled (keeping a constant radius on the string), what would have to happen to the period in ord
    15·1 answer
  • Which of these best describes how the kinetic energy of carbon dioxide molecules change as the carbon dioxide is heated? (2 poin
    10·2 answers
  • A)If the rms value of the electric field in an electromagnetic wave is doubled, by what factor does the rms value of the magneti
    9·1 answer
  • Baby Susie's pediatrician notices that one of her eyes rotates outward and that she does not appear to be using it for vision. W
    13·1 answer
  • For each value below, enter the number correct to four decimal places. Suppose an arrow is shot upward on the moon with a veloci
    8·1 answer
  • Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of 0.108 N when separated by 50
    9·1 answer
  • An object resistance to any change in its motion is tye _ of the object
    9·2 answers
  • A vector A~ has a negative x component 2.89 units in length and a positive y component 3.17 units in length. The vector A~ can b
    13·1 answer
  • Can someone help me with this please
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!