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True or false work is done only when an object moves in the direction of the applied force?
False. Work is done whenever a force is applied to an object and there is a displacement in the direction of the applied force, whether the object moves in that direction or not. In cases where the object does not move, work is still done as long as there is a force applied over a distance.
When work is done energy is transferred from one object to another true or false?
True. When work is done, energy is transferred from one object to another. Work is the transfer of energy that occurs when a force is applied to an object and it moves in the direction of the force.
What The weight of an object is constant true or false?
False. The weight of an object can vary depending on the gravitational force acting upon it.
Is the movement of energy from a warmer object to a cooler object is called heat transfer true or false?
True. Heat transfer is the movement of energy from a warmer object to a cooler object.
Is balanced forced cannot accelerate an object true or false?
False. A balanced force does not accelerate an object, but an unbalanced force is required to change the motion of an object.
When an object rolls over a surface the kind of friction that occurred is called round friction True or false?
false it is rolling friction
True or false work is done only when an object moves in the direction of the applied force?
False. Work is done whenever a force is applied to an object and there is a displacement in the direction of the applied force, whether the object moves in that direction or not. In cases where the object does not move, work is still done as long as there is a force applied over a distance.
How true or false A northerly wind comes from the south and moves toward the north?
False. A northerly wind comes from the north and moves towards the south.
True or false the greater the surface area of an object the greater the air resistance?
True. Air resistance is proportional to surface area, with larger surface areas creating more drag as the object moves through the air. This can result in the object experiencing greater resistance and slowing down.
True or false an object that revolves around another object does not move?
false
Circulation only moves useful things true or false?
False
When work is done energy is transferred from one object to another true or false?
True. When work is done, energy is transferred from one object to another. Work is the transfer of energy that occurs when a force is applied to an object and it moves in the direction of the force.
When you perform work on an object you increase the energy of the object. true or false?
true
Balanced forces acting on an object cause the object to accelerate True or false?
false
Is it true that a joint and the muscle that moves that joint tend to be innervated by different nerves?
False, NOT true.
- true or false an object with no force on it must be at rest?
false
When the diapragm moves upward the lungs fill with air true or false?
True
