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
inessss [21]
3 years ago
13

A car starting at position 16m travels out to position 67m and turns around and speeds back to position 16m. What was the displa

cement of the car?
A 0m

B 16m

C 67m

D 102m
Physics
2 answers:
enyata [817]3 years ago
7 0

Answer: D. 102m

Explanation: Because if you subtract 67m-16m=51. 51 +51 is 102m

Maksim231197 [3]3 years ago
3 0

Answer:

Displacement, D = 0

Explanation:

The initial position of the car is at 16 m. It travels out to position 67 m and turns around and speeds back to position 16 m. Finally, it reaches to a position of 16 m.

We know that the displacement of an object is equal to the shortest path covered by it.

Displacement = final position -initial position

D = 16 m - 16 m

D = 0

So, the displacement of the car during the entire journey is 0. Hence, this is the required solution.

You might be interested in
A fluid in an aquifer is 23.6 m above a reference datum, the fluid pressure (in gage pressure) is 4390 n/m2 and the flow velocit
Phoenix [80]

As per Bernuolli's Theorem total energy per unit mass is given as

\frac{P}{\rho} + \frac{1}{2}v^2 + gH = E

now from above equation

P = 4390 N/m^2

\rho = 0.999 * 10^3

v = 7.22 * 10^{-4} m/s

H = 23.6 m

now by above equation

\frac{4390}{0.999*10^3} + \frac{1}{2}*(7.22*10^{-4})^2 + 9.8*23.6 = E

E = 235.7 J/kg

Part B)

Now energy per unit weight

U = \frac{E}{g}

U = \frac{235.7}{9.8}

U = 24 m

7 0
4 years ago
An electroscope is a device that has small gold foil strips suspended from a metal rod. A student brings a negatively charged ro
Sever21 [200]
I think it is neutral
4 0
4 years ago
Can I PLEASE get some help?
Rus_ich [418]
1.) C
2.) B
3.) D
4.) B
Good luck with your work!
3 0
4 years ago
A house is lifted from its foundations onto a truck for relocation. The house is pulled upward by a net force of 2850 N. This fo
Gwar [14]

Answer:

m = 95000 kg

Explanation:

Given that,

Net force acting on the house, F = 2850 N

Initial speed, u = 0

Final speed, v = 15 cm/s = 0.15 m/s

We need to find the mass of the house. Let the mass be m. We know that the net force is given by :

F = ma

Where

a is the acceleration of the house.

So,

F=m\dfrac{v-u}{t}\\\\m=\dfrac{Ft}{(v-u)}\\\\m=\dfrac{2850\times 5}{(0.15-0)}\\\\m=95000\ kg

So, the mass of the house is equal to 95000 kg.

3 0
3 years ago
A first order reaction, A -> products, has a rate reaction of .00250 Ms-1 when [A] = . 484 M. (a) What is the rate constant,
tamaranim1 [39]

Answer: a)  The rate constant, k, for this reaction is 0.00516s^{-1}

b) No t_{\frac{1}{2}} does not depend on concentration.

Explanation:

Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

A\rightarrow products

Given: Order with respect to A = 1

Thus rate law is:

a) Rate=k[A]^1

k= rate constant

0.00250=k[0.484]^1

k=0.00516s^{-1}

The rate constant, k, for this reaction is 0.00516s^{-1}

b) Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  

t = age of sample

a = let initial amount of the reactant  

a - x = amount left after decay process  

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

t_{\frac{1}{2}}=\frac{2.303}{k}\log\frac{100}{50}

t_{\frac{1}{2}}=\frac{0.69}{k}

Thus t_{\frac{1}{2}} does not depend on concentration.

8 0
3 years ago
Other questions:
  • If John mows 11.5 meters of lawn from east
    12·1 answer
  • Can someone tell me the acceleration?
    7·1 answer
  • Blind spots of large vehicles are called
    10·2 answers
  • (b) Suppose at a certain instant the kinetic energy is twice the elastic potential energy. Write an equation describing this sit
    6·1 answer
  • A car is going 8 meters per second on an access road into a highway
    8·1 answer
  • If a magnet is broken into two pieces, what happens to the magnetic poles?
    10·2 answers
  • What are the 2 types of electricity
    8·1 answer
  • When you hammer a nail into wood, the nail heats up. 30 Joules of energy was absorbed by a 5-g nail as it was hammered into plac
    8·1 answer
  • How much work is done if a force of 20 N moves an object a distance of 6 m?​
    11·1 answer
  • I NEED SOMEONE TO HELP ME in the following circuit the intensities of the currents following through the lamps L1 and L3 are I1
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!