Answer:
a = 25 cm/s²
Explanation:
Given,
The mass of the cart, m = 1 Kg
The acceleration of the cart, a = 50 cm/s²
The string with clay hanging off the ramp exerts a force, F on the cart (neglecting the tension in the string)
F = m x a
= 1 Kg X 50 cm/s²
= 50 Kg cm/s²
Hence the force exerted by the clay hanging off the ramp on the cart, F = 50 Kg cm/s²
If the mass of the cart is doubled '2 Kg', the same magnitude of the force acts on the cart.
Therefore, from the equation,
F = m x a
50 Kg cm/s² = 2 Kg x a
a = 50 Kg cm/s² / 2 Kg
= 25 cm/s²
Hence, the acceleration of the cart is, a = 25 cm/s²
Answer: As you already know people have cloned dolly sheep but what about people? will we be able to clone ourselves one day?. Good question, actually scientist believe it may be possible years from now, though it wouldn't be right if we didn't research. It is hard to clone animals let alone people which is probably one of the reason's some human's oppose it so much. Think of it this way though if we cloned ourselves or someone clones us after we die it'll be like we never left. It will bring less heart-ship to people knowing can always have that person. it will also make life more evolved in evolution and theory.
i couldn't think of anything else but her's a start :)
Answer:
the correct one is D
Explanation:
A question that can be answered with a scientific investigation must be a question where measurements of some kind can be made and with these measurements check that the question is correct or not.
When examining the answers the correct one is D
The physical properties that can be used to identify an
unknown material are the ability to rust, malleability and thermal
conduction. The answers are letters A, B and D. Weight cannot be used to
identify an unknown material.
Answer: It keeps them organized
Explanation: ... ew