The distance between the object and a diverging lens is -20 cm and the image is virtual and inverted.
How to calculate object's distance?The object distance for this scenario is 40 mm, as given in the problem statement.
To determine the image properties, we need to use lens equation which is 1/f = 1/u + 1/v where f is the focal length, u is the object distance and v is the image distance.
Using the given information, the lens equation can be written as:
1/10 = 1/40 + 1/v
Solving for v, we get:
v = -20 cm
As the image distance is negative, it means that the image is virtual and inverted.
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This penalty is imposed when an offense is made by a team or when the actual offender is unknown.
Unscramble: ENHCB NOMIR
This penalty in ice hockey is imposed when an offense is made by a team or when the actual offender is unknown is called bench minor penalty.
What is bench minor penalty ?The least severe kind of punishment is a minor one. Two minutes constitute a minor penalty. In most circumstances, the guilty player's side will play with fewer players due to the penalty box assignment.
Any skater who was on the ice at the time of the offence may serve the penalty if the team is handed a bench minor penalty (charged against the team rather than an individual player) and the offending player is the goalkeeper or a coach.
Rarely, if the player who committed the offence gets injured during the same play, the penalty may also be served by anybody else who was on the ice.
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Answer:
minor bench,
Explanation:
nomir should be pretty easy, put the M at the start because it is the most reasonable letter to put at the start. I knew that it was obviously minor
enhcb I knew was bench because minor bench obvi
Janet’s science teacher assigns Janet her classmates
The best investigation would be use a different amount of mass in the cart for five different trials, and measure the force needed to start the cart rolling each time.
Speed is not directly impacted by mass. It establishes how quickly an object can increase its speed (accelerate) in response to a specific force. Lighter objects change their speed by a given quantity with a given force in a shorter amount of time.
More mass means that heavier items are more challenging to move and stop. Greater mass in heavier items makes them more resistant to change than lighter ones. A bicycle or a Cadillac can be propelled or stopped once in motion. It is more difficult to start or stop an object the more big it is (has more inertia). Potentially, an object with the same kinetic energy could also be slower and heavier.
Kinetic Energy's formula is KE = 1/2 mv2. Because mass and kinetic energy are directly correlated, an object's kinetic energy rises as mass does. The same may be said for velocity.
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How much water at 17° C needs to be mixed with 204 g of water at 85° C for the final temperature to be 67° C?
9. If the mass of a 200 N object is cut in half, what would happen to its weight in Newtons?
Answer:
as we know that weight = mass ×gravity (earth's gravity 9.8m.s²)the weight will be also be cut in halfmass is directly proportional to the weightExplanation:
let's say our mass is 50 kgour gravity is 9.8m.s²therefore 50×9.8=490Nnow cut the mass in half therefore 25×9.8=245NIn the Growing Plants activity within the lesson, you were asked to set up 3 pots:
Pot A: Bean seed, 2 lights on, 0 mL of water
Pot B: Bean seed, 2 lights on, 30 mL of water
Pot C: Bean seed, 2 lights on, 70mL of water
Which plant had the greatest height and mass at the end of 50 days?
A
B
C
The plant that had the greatest height and mass at the end of 50 days is Pot B
Which plant has the greatest height?We have to note that in the growth of the plants there are some parameters that we know to be very essential and those things that are very essential must be there if the plant is to grow and reproduce well.
The most essential things that the plant needs so as to function are;
a) Light
b) Water
c) Nutrients
If the water is too much, it can prevent the plant from getting to germinate and then grow up well in the soil.
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Given two pieces of aluminum foil, make one into a ball and one into a box, distinguish the physical properties
The difference physical properties of aluminum ball and aluminum box is: ball is sphere and box is cubic in shape.
What are the differences between cube and sphere?A cube is shaped squarely, whereas a spherical is shaped roundly.A sphere is not a regular hexahedron because it is a solid object but lacks any faces, edges, or vertices. A cube is a regular hexahedron because it contains six square faces, twelve edges, and eight vertices.A sphere is a point with a radius that extends from its centre to its outermost point. Additionally, a cube has sides that link its vertices to one another.Learn more about sphere here:
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The burning of gasoline in
a car releases about
3.0 X 104 kcal/gal. If a car averages 41 km/ gal when driving 110 km/h, which requires 25 hp, what is the efficiency of the engine under those conditions?
3.0 x 104 kcal/gal are released during gasoline combustion in an automobile. 18650 watts (converted into horsepower) divided by 78836 gave me an efficiency of 23.46%.
How to find the calculation?What is the engine's efficiency at those speeds if a car averages 41 km/gallon when traveling at 90 km/h, which takes 25 hp? Although I believe I have the right solution, I'm not sure. 746 watts are equivalent to 1 horsepower. 25 horsepower is equal to 18650 watts. 1 kcal equals 4186 joules (watts per second). (Ql / Qh) - 1 = e = W / Qh 2.26 gallons will be consumed in an hour if you go at 91 km/hr and utilize 1 gal/41 km. The 1 - Ql / Qh is not necessary, in my opinion, as no temperatures are specified. 34883 joules/sec result when I convert 30000 kcal/gal to watts. Due to the use of 2.26 gal, 78836 is the result of multiplying the above by 2.26. 18650 watts (converted into horsepower) divided by 78836 gave me an efficiency of 23.46%.To Learn more About gasoline combustion refer To:
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the dust bowl was an example of millions of pounds of dry soil being blown away by the wind this is an example of
A: erosion
B: weathering
C. Deposition
Answer: A: erosion
Explanation:
The Dust Bowl was a period of severe dust storms that occurred in the central United States during the 1930s. It was caused by a combination of factors, including prolonged drought, poor farming practices, and high winds. During this period, millions of pounds of dry soil were blown away by the wind, leading to a significant loss of topsoil. This is an example of erosion.
EXPLORING WORK AND ENERGY OBJECTIVES: - Measure the force required to move a mass over a certain distance using different methods. - Compare the force required to move different masses over different time intervals. MATERIALS: - clamps - cord, 1.00 m - spring balance (labeled in diagram as Force Meter) - inclined plane - masking tape - meterstick - set of hooked masses - stopwatch PROCEDURE 1 1. At one edge of the lab table, place a tape mark to represent a starting point. From this mark, measure exactly 0.50 m and 1.00 m. Place a tape mark at each measured distance. 2. Securely attach a 1.00 kg mass to one end of the cord and the spring balance to the other end. The balance will measure the force required to move the mass through different displacements. 3. Place the mass on the table top at the starting point. Hold the balance parallel to the tabletop so that the cord is taut between the balance and the mass. Carefully pull the mass at constant speed along the surface of the table to the 0.50 m mark (this may require a bit of practicel). As you pull, observe the force measured on the balance. If your balance is marked in grams or kilograms, convert to newtons so as to stay consistent with units. 4. Record the force and distance using the appropriate SI units. 5. Repeat steps 3 and 4 for a distance of 1.00 m. 6. Repeat entire procedure for a 0.2 kg mass. A. Did you exert the same force on the 1 kg mass as you did on the 0.2 kg mass to move them an equal distance? Why or why not? B. Did it require more force to move the mass 1.00 m than to move the same mass 0.50 m ? Why or why not? C. What force did you pull against? Explain
The force exerted on the 1 kg mass and the 0.2 kg mass to move them an equal distance would not be the same because the force required to move a mass depends on the mass being moved. The force required to move an object is given by the equation F = m * a, where F is the force, m is the mass, and a is the acceleration. Since the acceleration is constant in this experiment, the force required to move the 0.2 kg mass will be less than the force required to move the 1 kg mass.
How exploring work and energy?B. Yes, it would require more force to move the mass 1.00 m than to move the same mass 0.50 m. This is because the work done on an object is given by the equation W = F * d, where W is the work done, F is the force, and d is the distance. Since the force required to move the mass is constant, the work done would be proportional to the distance moved.
C. The force that was pulled against is the force of friction between the mass and the surface of the table. This force acts in the opposite direction to the applied force and must be overcome in order to move the mass. The magnitude of the force of friction depends on the mass, the coefficient of friction between the two surfaces, and the normal force acting on the mass.
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In a certain lab experiment, a spring gun was placed on a table and fired a steel ball horizontally outward. A student determines that the ball starts 1.0 m above the floor and travels 2.7 m before striking the floor
In a certain lab experiment, a spring gun was placed on a table and fired a steel ball horizontally outward. A student determines that the ball starts 1.0 m above the floor and travels 2.7 m before striking the floor.
(a) Determine the time that the ball is in the air. (2 pts)
(b) Determine the initial velocity of the ball. (2 pts)
a) The time that the ball is in the air is 0.23 second.
b) The initial horizontal velocity of the ball is 11.74 m/s.
What is velocity?
The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction.
Vertical height of the point = 1.0 meter.
The horizontal distance travelled by the ball = 2.7 m.
a) The time that the ball is in the air is = √(H/2g)
= √(1.0/2×9.8)
= 0.23 second
b) The initial horizontal velocity of the ball is = 2.7 m/0.23 s
= 11.74 m/s
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30. A stone falls freely from a building takes 5sec to reach at the ground a) What is the height of the building? b) Find the speed of the stone when it reaches at ground
Answer:
Height = 122.5 m
Speed = 49 m/s²
Explanation:
Thanks for the question.
We will use second equation of motion.
We know, u = 0 (body falls from rest)
t = 5 (given)
a = 9.8 m/s² (acceleration due to gravity)
s = ut + 0.5 at²
s = 0.5 x 9.8 x 25 = 122.5
So, the height of the building is 122.5 m.
Now, v = u + at
v = 0 + 9.8 x 5 = 49 m/s²
Cheers
Please help. Incomplete/Irrelevant answers will be reported.
Fred is on the way to work. He left his house at 6:30 am. By 6:50, he was 30 minutes away from work and had already travelled 15 miles.
A) At this pace, how many more miles will Fred need to drive? How many miles did Fred drive in total?
B) Now assume Fred ran into traffic and will only get into his work at 7:50 am. What is the average speed of his path from home to work?
The time that Fred taken to cover a distance of 15 miles is 20 minutes or 0.3 hours. For next 30 minutes, he will cover a distance of 22.5 miles. Then the total distance he traveled is 37.5 miles.
What is average speed ?The average speed of a moving body is the measure of the distance covered per unit time. The common unit of speed is m/s. Other units are miles/hr., ft./s, km.hr etc.
Given, that within 20 minutes, Fred travels 15 miles. He have to drive 30 minutes more. Then the distance covered within next 30 minutes is :
(30× 15)/20 = 22.5 miles.
Thus in total Fred have to drive 22.5 + 15 = 37.5 miles.
If Fred reaches the office by 7.50 am the total time he taken from 6.30 am is 1.33 hr .
Then average speed = 37.5 miles/1.33 hr = 28 miles/h
Therefore, the average speed of Fred is 28 miles/hour.
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