Which type of motion did Aristotle associate the earth with

A police car waits in hiding slightly off the highway. A speeding car is spotted by the police car traveling at speed s = 27.6 m

andriy [413]

Answer:

$t=\frac{2s}{a}=25.56s$

Explanation:

The distance traveled by the speeding car will be $d_s=st$ , where $s=27.6m/s$ .

The distance traveled by the police car will be given by the formula:

$d=v_{0}t+\frac{at^2}{2}$ , where $a=2.16m/s^2$ and $v_0=0m/s$ since it departs from rest, thus having $d=\frac{at^2}{2}$ .

The police car will reach the speeding car when those distances are the same, or $s=d$ , so we will have:

$st=\frac{at^2}{2}$

Which means:

$t=\frac{2s}{a}$

This is the expression asked, but we can use our values:

$t=\frac{2s}{a}=\frac{2(27.6m/s)}{(2.16m/s^2)}=25.56s$

6 0

3 years ago

What layer of the atmosphere is made mostly of hydrogen and helium?

ikadub [295]

On Earth, none of the atmosphere is.

6 0

3 years ago

PLEASE ANSWER QUESTION 25! NOT 24. Brainliest and 25 points!

Inessa05 [86]

D) Guard against a short circuit electrocuting a user.

"The 4-wire setup is inherently safer and better able to prevent electrical shock, which in the case of a 220/240-volt circuit can be fatal."

5 0

3 years ago

Read 2 more answers

A 1.50-kg iron horseshoe initially at 550°C is dropped into a bucket containing 25.0 kg of water at 20.0°C. What is the final te

Ber [7]

Answer:

Te = 23.4 °C

Explanation:

Given:-

- The mass of iron horseshoe, m = 1.50 kg

- The initial temperature of horseshoe, Ti_h = 550°C

- The specific heat capacity of iron, ci = 448 J/kgC

- The mass of water, M = 25 kg

- The initial temperature of water, Ti_w = 20°C

- The specific heat capacity of water, cw = 4186 J/kgC

Find:-

What is the final temperature of the water–horseshoe system?

Solution:-

- The interaction of horseshoe and water at their respective initial temperatures will obey the Zeroth and First Law of thermodynamics. The horseshoe at higher temperature comes in thermal equilibrium with the water at lower temperature. We denote the equilibrium temperature as (Te) and apply the First Law of thermodynamics on the system:

m*ci*( Ti_h - Te) = M*cw*( Te - Ti_w )

- Solve for (Te):

m*ci*( Ti_h ) + M*cw*( Ti_w ) = Te* (m*ci + M*cw )

Te = [ m*ci*( Ti_h ) + M*cw*( Ti_w ) ] / [ m*ci + M*cw ]

- Plug in the values and evaluate (Te):

Te = [1.5*448*550 + 25*4186*20 ] / [ 1.5*448 + 25*4186 ]

Te = 2462600 / 105322

Te = 23.4 °C

7 0

3 years ago

Read 2 more answers

What are common features of both the MMPI-2 and CPI? Select all that apply.

Amiraneli [1.4K]

Answer: D

Both MMPI-2 and CPI check for serious personality disorders.

MMPI - 2

MMPI - 2 stands for Minnesota Multiphasic Personality Inventory -2. It is the most widely used psychometric test to measure adult psychopathology. MMPI-2 differentiates people with hypochondriasis from normal one. MMPI-2 is able to detect unconsciously somatizing or consciously malingering in patients.

CPI

CPI stands for california psychological inventory. It is a self report inventory created by Harrision G. This test used to test the people, which are 13 years and older. It takes 40 minutes to complete the test. CPI works on "folk-concepts" which means an ordinary people can use it to describe other people around him.

8 0

3 years ago