True: All matter on earth is made up of atoms.
False: Subatomic particles don't identify an element. I give you an electron. Can you tell me where it came from?
False: (1/2) A neutron has no charge [That's the True part]. It identifies the element. (Not true).
True: description of an electron.
True: description of a proton
The force exerted by the hammer claws on the nail is =1578N
<h3 /><h3>How to calculate magnitude of force:</h3>
The force that is applied, as the effort on the hammer= F1
The force exerted by the hammer claws on the nail= F2
But,
magnitude of force exerted on hammer= F1*d1
While magnitude of force exerted by the hammer claws on the nail = F2( d2sin30°)
And, F1*d1 = F2( d2sin30°)
Where F1 = 133N
d1 = 29cm = 0.29m
F2 = X
d2 = 4.89cm = 0.0489m
After substitution,
133 × 0.29 = X( 0.0489 × sin30°)
38.57 = X ( 0.0489 × 0.5)
38.57 = X(0.02445)
X= 38.57/0.02445
X = 1578N
Therefore, the force exerted by the hammer claws on the nail is =1578N
Learn more about force here:
brainly.com/question/25239010
Answer:
98.12 m
Explanation:
Initial speed(v) = 25.0 m/s
Coefficient of static friction (u) = 0.650
The minimum value of the coefficient of kinetic friction should be the coefficient of static friction.
Kinetic friction is given as
umg = ma (a is the required acceleration)
We then have
a = -ug
= -(0.65*9.8)
= -6.37 m/s^2
The shortest distance d is obtained by
d = (V^2 - v^2)/ 2a
V = 0 m/s (final velocity)
d = (0 - 25^2) / 2(-6.37)
d = -625/-6.37
d = 98.12 m
Answer:constant amount of work is done
25+50-30-40 = 0
north and east are positive directions, south and west are negative
hope this helps
also hope u enjoy a pic of my crush lol
