i used this coding for select image from database but the image did not retrieve from database and did not display
what is the issue ?
include "connect.php";
$sql= "select fileTmpPath
from picture where ID='3'";
$result =
mysqli_query($conn,$sql);
$pic=
mysqli_fetch_array($result);
echo " <img src=" .$pic["fileTmpPath"]."' />";
?>
In: Computer Science
| Experiment |
A |
B | C |
intial rate of formation of D (M/min) |
| 1 | 2.0 | 2.0 | 2.0 | 2.0 |
| 2 | 2.0 | 1.0 | 2.0 | 2.0 |
| 3 | 4.0 | 5.0 | 2.0 | 8.0 |
| 4 | 2.0 | 4.0 | 1.0 | 1.0 |
| 5 | 3.0 | 4.0 | 4.0 | ? |
a) Determine the rate law.
b) Calculate the rate constant. Specify units.
c) Calculate the rate of reaction for experiment 5.
d) How is the rate of appearance of D related to the disappearance of B?
e) In experiment 3, what is the rate of disappearance of B?
In: Chemistry
Provide examples of best practice and poor practice from your own experience of website design and justify your thinking with evidence.
In: Computer Science
Exercise 1.40
You are given two vectors A⃗ =−3.00ι^+6.00j^and B⃗ =4.00ι^+2.00j^.
Let the counterclockwise angles be positive.
Part A
What angle does A⃗ make with the +x-axis?
θ1=
∘
SubmitMy AnswersGive Up
Part B
What angle does B⃗ make with the +x-axis?
θ2=
∘
SubmitMy AnswersGive Up
Part C
Vector C⃗ is the sum of A⃗ and B⃗ , so C⃗ =A⃗
+B⃗ . What angle does C⃗ make with the +x-axis?
θ3=
In: Physics
Q1; 0.4 mL of serum were added to 1.6 mL diluent and mixed. 0.4 mL of this mixture were then added to 1.6 mL of diluent and mixed. This process was repeated several times. What is the df in the fourth tube?
Q2: Give three examples of qualitative tests and three examples of semiquantitative tests
Q3:There are six domains of health care quality; mention any three domains
Q4;What is false positive results and false negative results? Which of these values affect sensitivity and specificity of the method
In: Biology
a. Assume that all of the pendulum’s mass M is contained in the “bob” at the end of the pendulum rod. Write Newton’s 2nd Law for the force balance along the circular arc traced out by the pendulum bob as it swings back and forth. [Hint: You can relate the position of the pendulum bob along its arc to the angle ! formed by the pendulum rod and the vertical line when the pendulum bob is at the “base” of the arc. It may help to draw this.]
b. Using the “small angle approximation” sin(theta) ≈ theta(t) and assuming that the pendulum bob is released from rest at an angle theta(zero), show that theta(zero) = (theta(zero))cos (omega t) solves the force balance equation in (a) for a particular value of omega. What value is it?
c. The period of the pendulum corresponds to the time it takes the pendulum to oscillate through one cycle, i.e., from its initial position and back. Use the result in b to find the period. You should find the period to be a numerical factor times our estimate of the period from dimensional considerations.
In: Physics
I need a lesson plan for preschool children age 4-5 about how to count numbers until the 20.
If the topic is numbering, I need descriptions. Farming Theorist & Concept. For example one of Piaget's theory with one source and what is the Outcomes and I need an assessment plan.
In: Psychology
Table 1
DATA
CALCULATIONS
L (mm) Rrm (Ω) ΔL (mm) Rhot
(Ω) Trm (C°) Thot (C°) ΔT
(C°)
Copper 699 112 0.79 9.2 22.5 84.75
62.25
Steel 699 112 0.64 9.437 22.5 84
61.5
Aluminum 699 112 1.07 9.767 22.5 83
60.5
1. Use the Conversion Table at the end of the 'Instructions'
section, or the one on the top of the expansion base, to convert
your thermistor resistance measurements, Rrm and Rhot, into
temperature measurements, Trm and Thot. Record your results in the
table.
2. Calculate ΔT = Thot – Trm. Record the
result in the table.
3. Using the equation ΔL = αL ΔT, calculate α for copper, steel,
and aluminum.
αCu = 1.81556E-05
αsteel =
1.48877E-05
αAl = 2.53018E-05
1. Look up the accepted values for the linear expansion
coefficient for copper, steel, and aluminum. Compare these values
with your experimental values. What is the percentage difference in
each case? Is your experimental error consistently high or low?
2. On the basis of your answers in question 1,
speculate on the possible sources of error in your experiment. How
might you improve the accuracy of the experiment?
3. From your result, can you
calculate the coefficients of volume expansion for copper,
aluminum, and steel? (i.e. ΔV = αvol V ΔT)
In: Physics
Directions Create a class that computes the lift and drag of a rectangular planform wing. Lift can be calculated with the following equation: lift = Cl * A * 0.5 * rho * V2 Cl is the lift coefficient; it is dimensionless A is the area of the wing in m2 rho is the air density, in kg/m3 , for the altitude the wing is flying V is the velocity in m/s Drag can be calculated with the following equation: Drag = Cd * A * 0.5 * rho * V2 Cd is the drag coefficient; it is dimensionless The other variables are the same as the lift equation. Notes: Cl and Cd vary with the wing angle of attack. rho varies with altitude. A rectangular planform wing is 85% efficient when compared to the optimal elliptical wing.
In: Computer Science
You place your lunch leftovers in the refrigerator. Suppose the refrigerator needs to remove 2.0090E+4 J of thermal energy from your lunch to cool it to the temperature of the inside of the refrigerator. In the meantime, this means the refrigerator produces 2.7959E+4 J of thermal energy that it expels into the kitchen as a result. What is the total work done by the compressor motor in the refrigerator? (Ignore any thermal loses due to friction in the motor.)
What is the Coefficient of Performance for the refrigerator?
Your refrigerator actually acts like a heater in your kitchen. Suppose you have a small electric space heater that has a power output of 1.2kW. How long would this heater have to run to produce the same amount of heat as the refrigerator produced while cooling your leftovers?
It takes electricity to run the motor on the refrigerator. If your cost of electricity is 13 cents per kilowatt*hour, how much does it cost (in cents - do not enter units) to cool your lunch down?
In: Physics
A) What should his speed be at the top of the ramp to make it to the edge of the bank? B) if his speed was half the value found in part A where would he land? A physics professor did daredevil stunts in his spare time. His last stunt was an attempt to jump across a river on a motorcycle (the figure (Figure 1) ). The takeoff ramp was inclined at 53.0 ?, the river was 40.0 m wide, and the far bank was 15.0 m lower than the top of the ramp. The river itself was 100 m below the ramp. You can ignore air resistance.
In: Physics
Please write a very brief reflection about "it's in her eyes, an unspoken pain in laboring patients" by laurie van damme
In: Nursing
**SAP Project Manager
**Ten sentences for each points
In: Computer Science
Assume you are 25 and earn $31,000 per year, never expect to receive a raise, and plan to retire at age 55. If you invest 5 percent of your salary in a 401(k) plan returning 11 percent annually, and the company provides a $0.50 per $1.00 match on your contributions up to 3 percent of salary, what is the estimated future value of your 401(k) account? Once you retire, how much can you withdraw monthly if you want to deplete your account over 30 years?
In: Finance
A lidar (laser radar) gun is an alternative to the standard radar gun that uses the Doppler effect to catch speeders. A lidar gun uses an infrared laser and emits a precisely times series of pulses of infrared electromagnetic waves. The time for each pulse to travel to the speeding vehicle and return to the gun is measured. In one situation a lidar gun in a stationary police car observes a difference of 1.23 10-7 s in round-trip times for two pulses that are emitted 0.440 s apart. Assuming that the speeding vehicle is approaching the police car essentially head-on, determine the speed of the vehicle.
In: Physics