A spring was at its resting position where it is attached to a wall at its left side and a block at its right side as N
shown below. The spring constant is k = 95.5 – The block is moved rightwards and the spring's right end is
displaced from the position of 0.200 m to 0.220 m where it is held in place. All positions are measured from
the origin o of the wall.
m
M
+x
o →
What is the spring force exerted on the block?

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87