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
givi [52]
3 years ago
14

a kid is on a skate board going 14kph and trows a set of keys on the ground at 8kph. the spped of the keys relitive to the gound

is?
Physics
1 answer:
Vanyuwa [196]3 years ago
5 0
To determine the speed relative to the ground, since the ground is our reference frame, it would be v = 0, for the kid on the skateboard, you would need to take into account the speed that he/she is going and the speed of the keys thrown at.

I believe.
You might be interested in
Michelle walked 217 meters in 2 minutes ,55 seconds what is her speed
anyanavicka [17]

Explanation:

55×60=3300

2×60=120

3300+120=3420

speed=distance/time

speed=3420/217

x=15.6ms^-1

8 0
2 years ago
Helppppppp its exam ​
UkoKoshka [18]

Answer:

a. 240.2 C

Explanation:

7 0
3 years ago
Referring to the graph below of data describing a cart pulled across a level surface. When a 4 N force pulls on the cart, the ca
LenKa [72]

Answer:gjv

Explanation:

4 0
3 years ago
Read 2 more answers
What kind of energy does a flying bullet have?
Musya8 [376]
It mainly travels by kinetic energy
3 0
3 years ago
Read 2 more answers
A 0.877 mol sample of N2(g) initially at 298 K and 1.00 atm is held at constant volume while enough heat is applied to raise the
MissTica

Answer : The value of q\text{ and }\Delta U is 286.2 J and 286.2 J respectively.

Explanation : Given,

Moles of sample = 0.877 mol

Change in temperature = 15.7 K

First we have to calculate the heat absorbed by the system.

Formula used :

q=n\times c_v\times \Delta T

where,

q = heat absorbed by the system = ?

n = moles of sample = 0.877 mol

\Delta T = Change in temperature = 15.7 K

c_v = heat capacity at constant volume of N_2 (diatomic molecule) = \frac{5}{2}R

R = gas constant = 8.314 J/mol.K

Now put all the given value in the above formula, we get:

q=0.877mol\times \frac{5}{2}\times 8.314J/mol.K\times 15.7K

q=286.2J

Now we have to calculate the change in internal energy of the system.

\Delta U=q+w

As we know that, work done is zero at constant volume. So,

\Delta U=q=286.2J

Therefore, the value of q\text{ and }\Delta U is 286.2 J and 286.2 J respectively.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Each of three identical 15.0-L gas cylinders contains 7.50 mol of gas at 295 K. Cylinder A contains He, cylinder B contains O2,
    13·1 answer
  • Determine the specific heat of iron if 6.1 j of energy are needed to warm 1.50 g of iron from 20.0◦c to 29.0◦c?
    7·1 answer
  • What occurs when a swimmer pushes through the water to swim?
    5·2 answers
  • When a 60-watt light bulb is connected to a 120-volt source the current in the light bulb is?
    15·1 answer
  • We will look at an example of a banked curve. In this case the normal force provides the needed radial acceleration. This allows
    7·1 answer
  • A round steel shaft is subjected to a concentrated moment M=1000 lbf.in at point B, which is located at distances a=8,b=9 in fro
    7·1 answer
  • (06.01 LC)
    5·2 answers
  • What is needed to cause a change in the state of matter? a. Adding or removing energy c. Changing the arrangement of atoms b. Ch
    6·2 answers
  • How much time would it take a train locomotive running at 6000 Horsepower to use the
    9·1 answer
  • How many atoms are present in 2 moles of chromium?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!