Answer: The correct answer is convex lenses can produce images larger than objects.
Explanation:
Convex lens is a type of spherical lens in which two spherical surface bulge outwards. This type of lens is known as double convex lens or simply convex lenses.
These lenses are known as converging lenses because they converge the light rays passing through it to one point. The image formed by these lens depends on the location of the object. In one case, it produces an enlarged image.
Concave lenses only produces only image which is reduced in size than the object.
In microscopes, the object used is very very small and to view its enlarged image, only convex lenses are used.
Hence, the correct answer is convex lenses can produce images larger than objects.
2) 1.0 x 10^3 N
3) 1.5 x 10^3 N
4) 5.0 x 10^5 N
Answer:
2) 1.0 x 10^3 N
Explanation:
As a 5.0 x 10^2 newton basketball player jumps from the floor up toward the basket, the magnitude of the force of her feet on the floor is 1.0 x 10^3 newtons. As she jumps, the magnitude of the force of the floor on her feet is
1) 5.0 x 10^2 N
2) 1.0 x 10^3 N
3) 1.5 x 10^3 N
4) 5.0 x 10^5 N
The answer is B , because from newton's third law of motion which states that action and reaction are equal and opposite.
so the reaction of the floor on her leg will be equal to the the magnitude of her feet on the floor, this will hold if the floor does not collapse.
Answer:
The answer is Hawaiian or Shield volcano.
Explanation:
Volcanoes can be classified according to their shape or according to their type of eruption.
Hawaiian volcanoes (also known as shield volcano) are volcanoes of calm eruption, because the lava is very fluid. The gases are easily released and no explosions occur. The volcano that forms has a shield appearance, since lava, being very fluid, covers a large area before solidifying.
The kinetic energy of a 1.0 kg ball thrown with an initial velocity of 30 m/s is calculated using the formula KE = 1/2 mv^2, resulting in an energy of 450 Joules.
The question you've asked pertains to calculating the kinetic energy of a ball thrown into the air. To find the kinetic energy (KE) of a 1.0 kg ball thrown with an initial velocity of 30 m/s, you can use the formula KE = ½ mv², where m is the mass of the ball and v is the velocity. Plugging in the values, you get KE = ½ × 1.0 kg × (30 m/s)² = 0.5 × 1.0 × 900 = 450 J. Therefore, the kinetic energy of the ball is 450 Joules.
#SPJ12
Explanation:
Potential Energy = mg h mg = 240 N
80 = 240 h
h = 80 / 240 = 1/3 meter ( 33.3 cm)
Answer:
By the information given, I am not sure how the event has played out. However, using common knowledge, I can give a scenario of how it may play out.
When removing the first block (the foundation), gravity will pull the other blocks down, as the strength of gravity exceeds that of the strength of air holding it up. This means that all the blocks on top would fall.
By definition of Newton's 1st - 3rd laws, the blocks would not move unless a force is given to it (i.e., removing the bottom block, which causes gravity). Gravity would pull the other blocks downwards. This would lead to the falling of the stack of blocks.
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Answer:
Explanation:
A stack of blocks sits in equilibrium. That means, by Newton's 1st law, all blocks will remain stationary. The weight of each block is balanced by the reaction force from the block underneath it. The bottom block experiences a reaction force equals to the total weight of all blocks from the ground.
When the bottom block is removed, there will not be any reaction force from the ground. That causes a disturbance in the equilibrium. Without the balancing reaction, the blocks will have the gravity force from their weights pulling them down. By Newton 2nd law, the unbalance force will cause the blocks to accelerate towards the ground until they all crash-land.