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
Makovka662 [10]
3 years ago
13

The velocity of a plane that travels 450.0 km due north in 3.500 hours is

Physics
2 answers:
dalvyx [7]3 years ago
6 0

Answer : The velocity of a plane that travels 450.0 km due north in 3.500 hours is, 35.71 m/s

Solution : Given,

Distance = 450 km = 450000 meter     (1 km = 1000 m)

Time = 3.5 hours = 12600 second        (1 hr = 3600 s)

Velocity : It is defined as the displacement divided by the time. It is vector quantity. That means both magnitude and the direction are needed to define the velocity. The S.I unit of velocity is meter per second (m/s).

Formula used :

Velocity=\frac{Displacement}{Time}

Now put all the given values in this formula, we get

Velocity=\frac{450000m}{12600s}=35.71m/s

Therefore, the velocity of a plane that travels 450.0 km due north in 3.500 hours is, 35.71 m/s

ddd [48]3 years ago
4 0
I believe it's <span> 128.6 km/h due north. 
</span>
I hope this helps!
You might be interested in
The rms (root-mean-square) speed of a diatomic hydrogen molecule at 50∘C is 2000 m/s. Note that 1.0 mol of diatomic hydrogen at
denis-greek [22]

Answer:

A) d. (1/4)(2000m/s) = 500 m/s

B) c. 4000 J

C) f. None of the above (2149.24 m/s)

Explanation:

A)

The translational kinetic energy of a gas molecule is given as:

K.E = (3/2)KT

where,

K = Boltzman's Constant = 1.38 x 1^-23 J/K

T = Absolute Temperature

but,

K.E = (1/2) mv²

where,

v = root mean square velocity

m = mass of one mole of a gas

Comparing both equations:

(3/2)KT = (1/2) mv²

v = √(3KT)/m  _____ eqn (1)

<u>FOR HYDROGEN:</u>

v = √(3KT)/m = 2000 m/s  _____ eqn (2)

<u>FOR OXYGEN:</u>

velocity of oxygen = √(3KT)/(mass of oxygen)  

Here,

mass of 1 mole of oxygen = 16 m

velocity of oxygen = √(3KT)/(16 m)

velocity of oxygen = (1/4) √(3KT)/m

using eqn (2)

<u>velocity of oxygen = (1/4)(2000 m/s) = 500 m/s</u>

B)

K.E = (3/2)KT

Since, the temperature is constant for both gases and K is also a constant. Therefore, the K.E of both the gases will remain same.

K.E of Oxygen = K.E of Hydrogen

<u>K.E of Oxygen = 4000 J</u>

C)

using eqn (2)

At, T = 50°C = 323 k

v = √(3KT)/m = 2000 m/s

m = 3(1.38^-23 J/k)(323 k)/(2000 m/s)²

m = 3.343 x 10^-27 kg

So, now for this value of m and T = 100°C = 373 k

v = √(3)(1.38^-23 J/k)(373 k)/(3.343 x 10^-27 kg)

<u>v = 2149.24 m/s</u>

<u></u>

8 0
3 years ago
If an astronaut can throw a certain wrench 15.0 m vertically upward on earth, how high could he throw it on our moon if he gives
Sever21 [200]

Answer:

hm= 18.2 m

Explanation:

Solution is attached

5 0
3 years ago
Apakah yang dimaksud dengan gaya
tangare [24]
Nah gaya seperti titik fashion seperti apa yang Anda mana dan hal-hal seperti itu. (tell me if you cant understand)
8 0
3 years ago
Read 2 more answers
The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle connects to the bones of th
SVETLANKA909090 [29]

Answer:

F_b  = 1647.92 N

Explanation:

Given:

length of the arm, r = 0.465 m

distance of forearm from elbow, r' = 2.15 cm = 0.0215 m

Mass of the forearm, M = 2.45 kg

Mass of the object, m = 6.55 kg

Let, the Force by bicep be, F_b

under the motionless condition, the net moment about elbow is zero

thus,

F_b × 0.0215 - Mg × (0.465/2) - mg × (0.465) = 0

or

F_b × 0.0215 - 2.45 × 9.8 × (0.465/2) - 6.55 × 9.8 × (0.465) = 0

or

F_b × 0.0215 - 5.582 - 29.848 = 0

or

F_b  = 1647.92 N

hence, the force exerted by the elbow is 1647.92 N

4 0
4 years ago
Read 2 more answers
Given sin ti + cos ti + tk <br>​
erastova [34]

Answer:

I don't understand the question that up added

Explanation:

what do you mean by ti and tk

6 0
3 years ago
Other questions:
  • An electron that has an instantaneous velocity of ???? = 2.0 × 106 m ???? ???? + 3.0 × 106 m ???? ???? is moving through the uni
    9·1 answer
  • Resuelve:
    13·1 answer
  • Explain why the pressure exerted by a gas does not depend on the type of the gas.
    5·2 answers
  • A(n) ______ is a gap in the geologic record where some rock layers have been lot because of erosion
    15·1 answer
  • assume that in an unpolished floor a lady us pushing a 40 kg box to the left with an applied force of 192 N. find the sum of for
    10·1 answer
  • When you stretch a spring 13 cm past its natural length, it exerts a force of 21
    12·1 answer
  • An elevator of 3 × 10^4N is raised to a height of 100m in 20s . The work done by electric motor is equivalent to ?​
    15·1 answer
  • Select all the correct answers.
    10·2 answers
  • WILL GIVE YOU BRAINLIST IF YOU ANSWER
    13·2 answers
  • You drag a crate across a floor with a rope. The force applied is 750 N and the angle of the rope is 25.0° above the horizontalH
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!