A toy car runs off the edge of a table that is 1.225m high .the car lands 0.400m from the base of the table .
Answers
Answer:
a) 0.5s
b) 2.45m/s
Explanation:
The toy car in figure 6-12 runs off the edge of a table that is 1.225m high. The car lands 0.400m from the base of a table.
a) How long did it take the car to fall?
b) How fast was the car going on the table?
don't now if this helps but let me now if it did
Final answer:
The question is about a physics concept called projectile motion. First, we calculate the time the toy car is in the air using the height of the table and gravity, and then we find the horizontal velocity of the car as it leaves the table.
Explanation:
The question is about a situation where a toy car runs off the edge of a table and lands on the floor. This situation is a classic problem in physics pertaining to projectile motion or the motion of an object thrown in the atmosphere. Here, the motion is two-dimensional, including both vertical (free fall) and horizontal (uniform) motion.
First, calculate how much time the car is in the air using the height of the table and the acceleration due to gravity (approx. 9.81 m/s²). Using the free fall equation, t = √(2h/g), where h is the height of the table and g is the gravity, we get t = √(2*1.225m/9.81 m/s²) = 0.5 seconds. This is the time it takes for the car to hit the floor.
Next, we find the horizontal velocity using the formula s = d/t, where s is speed, d is distance and t is time. So, s = 0.400m/0.5s = 0.8 m/s. This is the speed of the car as it leaves the table.
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Answer:
Explanation:
Given
Initially Reading on the odometer is
Final reading on the odometer is
Time taken is
average velocity
Thus the average velocity of mail truck is
Answers
With the following equation: F = ma, we can find the missing values.
F = 25n
M = 0.5 kg
a = ?
a = f/m
a = 25/0.5
a = 50
a = 50 m/s
So, the acceleration is 50 m/s^2
Answers
B. Large cross-sectional area, long pipe
C. Small cross-sectional area, short pipe
D. Small cross-sectional area, long pipe
Answers
Answer:small cross-section area,long pipe
Explanation:
Conductance is a measure of how easily the current can flow through a electrical component.
It is the inverse of resistance.
Conductance is given by
where is conductivity(constant for a component),
is the length of component parallel to the flow and
is the area of cross-section of the component perpendicular to the flow.
So,conductivity increases with increase in and decreases with increase in
So,small cross-sectional area and long pipe has high conductance.
Answers
Final answer:
In Chemistry, pH levels can be determined using acid-base indicators or pH paper which change color to reflect the acidity or alkalinity of a solution. Substances with pH less than 7 are acidic, while those with pH over 7 are basic. The concentration of hydrogen ions can also be used to determine pH.
Explanation:
The pH level of a substance can be determined using acid-base indicators or pH paper which change color in relation to the acidity or alkalinity of the solution. The pH scale measures from 0 to 14, with 7 being neutral. Anything below 7 is considered acidic, and anything above 7 is basic or alkaline. For example, if using pH paper or an indicator, a solution that colors the paper or indicator red or orange is likely to be acidic, whereas a green or blue color suggests a basic solution. The specific color can provide a rough estimate of the pH value, with some indicators or pH papers providing more precise value ranges.
Another method to measure pH is by examining the concentration of hydrogen ions in the solution. A lower pH value indicates a higher concentration of hydrogen ions, making the solution more acidic. Conversely, a higher pH value indicates a lower concentration of hydrogen ions, making the solution more basic or alkaline.
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lemon juice, gastric juice and tomato juice are acidic, bleach and baking soda are alkaline and salt solution is neutral
B. pulley
C. wedgd
D. inclined plane
Answers
Final answer:
The inclined plane is the best simple machine to assist with moving heavy objects into a truck. It allows for less force to be used by distributing the required force over a longer distance.
Explanation:
The simple machine that is best suited to assist with the task of moving heavy objects into a moving truck 1.5 meters above the ground is the inclined plane (option D).
An inclined plane is a flat surface that is inclined or sloped, which allows us to move objects up or down with less force. By using an inclined plane such as a ramp, we can reduce the amount of force needed to lift the heavy objects into the truck.
For example, instead of trying to lift a heavy object straight up into the truck, which would require a significant amount of force, we can use an inclined plane to gradually raise the object by pushing it up the inclined surface. This allows us to distribute the required force over a longer distance, making it easier to move the object.
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