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
GrogVix [38]
3 years ago
10

While traveling, John let destination A at 9 am. Driving until 7 pm, he travelled a total of 500 miles. The next day, John left

at 9 am and drove until 5 pm, covering 270 miles. What was the average speed for both days, while driving
Physics
2 answers:
guapka [62]3 years ago
8 0

Answer:

The average speed for both days, while driving is 42.77 miles/hr.

Explanation:

Given that,

Distance first day = 500 miles

Distance second day = 270 miles

According to question,

The distance covered by the john in 10 hours = 500 miles

Next day ,

The distance covered by the john in 8 hours = 270 miles

We need to calculate the average speed for both days

Using formula of the average speed

v_{avg}=\dfrac{D}{T}

Where, D = total distance

T = total time

Put the value into the formula

v_{avg}=\dfrac{500+270}{10+8}

v_{avg}=\dfrac{770}{18}

v_{avg}=42.77\ miles/hr

Hence, The average speed for both days, while driving is 42.77 miles/hr.

beks73 [17]3 years ago
5 0

18 hours 770

770/18 average speed.

You might be interested in
An object has 16 N of force being applied to the right, 16 N of force being applied to the left, and 6 N of force being applied
umka2103 [35]

Answer:

the net force on the object is 6 N.

Explanation:

Given;

force applied to the right on the object, F_r = 16 N

force applied to the left of the object, F_l = 16 N

force applied downward on the object, F_d = 6 N

The net horizontal force on the object = F_r - F_l = 16N -16N = 0

The net vertical force on the object = 6 \ N \ downward

The net force on the object is calculated as;

F_{net}^2 = 6^2 + 0\\\\F_{net}^2 = 36\\\\F_{net} = \sqrt{36} \\\\F_{net} = 6 \ N

Therefore, the net force on the object is 6 N.

7 0
3 years ago
Is the us warmer than antarctica?
Likurg_2 [28]

Answer:

Yes

Explanation:

Antarctica is usually always cold.

7 0
3 years ago
Objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs. The spring consta
Zanzabum

Answer:

k_2=920\ N/m

Explanation:

Given that,

The spring constant of spring 1, k_1=230\ N/m

The motion of the object on spring 1 has twice the amplitude as the motion of the object on spring 2, A_1=2A_2

As the magnitude of the maximum velocity is the same in each case, it means the maximum kinetic energy is same in each case. In other words, the total energy is same.

\dfrac{1}{2}k_1A_1^2=\dfrac{1}{2}k_2A_2^2

k_1A_1^2=k_2A_2^2

k_1(2A_2)^2=k_2A_2^2

k_2=920\ N/m

So, the spring constant of spring 2 is 920 N/m. Hence, this is the required solution.

3 0
3 years ago
Which element is usually listed first in the formula of a binary
Elina [12.6K]

Answer: the element with the lowest electronegativity

Explanation:

3 0
3 years ago
A light spring of constant 179 N/m rests vertically on the bottom of a large beaker of water. A 5.32 kg block of wood of density
Digiron [165]

Answer:

Compression of the spring: 0.18 m (downward)

Explanation:

The forces acting on the block of wood are:

- The force of gravity, acting downward, of magnitude mg, where m = 5.32 kg is the mass of the block and g=9.8 m/s^2 is the acceleration due to gravity

- The force exerted by the spring, downward, of magnitude kx, where k=179N/m is the spring constant and x is the elongation of the spring

- The buoyant force, upward, of magnitude \rho V g, where \rho=1000 kg/m^3 is the water density and V the volume of the block

Since the block is in equilibrium, the net force is zero, so we can write

mg+kx-\rho V g=0 (1)

We have to find the volume of the block first. We have:

m = 5.32 kg (mass)

\rho_w = 622 kg/m^3 (wood density)

So, the volume is

V=\frac{m}{\rho_w}=\frac{5.32}{622}=0.0086 m^3

So now we can re-arrange eq.(1) to find the elongation of the spring, x:

x=\frac{-mg+\rho Vg}{k}=\frac{-(5.32)(9.8)+(1000)(0.0086)(9.8)}{179}=0.18 m

So, the spring is compressed by 0.18 m.

7 0
3 years ago
Other questions:
  • Janet wants to find the spring constant of a given spring, so she hangs the spring vertically and attaches a 0.47 kg mass to the
    12·1 answer
  • An object is accelerating at a rate of 8m/s^2 when suddenly has the net force upon increased by a factor of 2
    11·1 answer
  • List four ways a person can withdraw money from a<br> checking account.
    10·1 answer
  • Difference between freefall and weightlessness
    13·1 answer
  • What is linear expansivity?​will receive brainliest if answered correctly​
    13·2 answers
  • Biology of awerness. Based on information in the articale, what is the most likely reason all organisms adapted to havea the tra
    9·1 answer
  • explain how a roller coaster functions using gravity and momentum. Why does it not need an engine or a motor to speed it up and
    9·2 answers
  • 39
    12·1 answer
  • Pick 2 not one answer please and thank you
    14·2 answers
  • Draw a vector representing the direction of the electric field. The orientation of the vector will be graded. The location and l
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!