Struggle Deck

Question 1

Inverse proportionality graph

Answer 1

Question 2

Equation: conservation of energy

Answer 2

KE_f + PE_f = KE_i + PE_i

Question 3

When there is a transfer of energy to a projectile, how does the projectile’s mass affect its velocity and range?

Answer 3

A heavier object will have less initial velocity and less range.

Question 4

Does air resistance affect x or y velocity?

Answer 4

both x and y velocities

Question 5

What does an ¹H NMR J-value represent?

Answer 5

the distance between adjacent spikes within a peak

Question 6

Equation: kinetic energy

Answer 6

KE = (1/2)mv²

Question 7

If an object has 0 y-velocity, what determines its length of time in flight?

Answer 7

height

Question 8

What is the maximum value for gravitational potential energy?

Answer 8

0

Question 9

True/False: an object cannot accelerate if it is moving at a constant speed

Answer 9

False: it can maintain a constant speed but change directions

Question 10

Which type of collision generally imparts a bigger change in momentum to colliding objects?

Answer 10

elastic

Question 11

Any time an object moves in a circular path, what is the net force equal to?

Answer 11

centripetal force

Question 12

Backspin has what effect on a ball’s direction?

Answer 12

It causes the ball to rise.

Question 13

On a velocity v. time graph, what does the area under the curve represent?

Answer 13

displacement

Question 14

Are halogens added or subtracted when calculating units of unsaturation?

Answer 14

subtracted

Question 15

What is deuterium?

Answer 15

²H: hydrogen has an extra proton (“heavy” hydrogen)

Question 16

Equation: projectile: speed at any point in motion

Answer 16

speed = √(v_x² + v_y²)

Question 17

At the apex of a projectile, which has a value of zero: speed or velocity?

Answer 17

Neither - although y-velocity is zero, x-velocity is constant.

Question 18

What kind of friction prevents slipping?

Answer 18

static friction

Question 19

How do units of unsaturation affect a compound’s entropy?

Answer 19

They decrease entropy because it does not have as much freedom to move and rotate.

Question 20

Equation: potential energy due to gravity

Answer 20

PE = mgh

Question 21

Equation: free fall: time in flight

Answer 21

t = √(2h/a)

Question 22

Reduction of an alkene by H₂ and palladium (pd) metal adds in which orientation?

Answer 22

syn

Question 23

For linear momentum to be conserved, there must not be what?

Answer 23

external forces acting on the system

Question 24

What is the effect of air resistance on a parabolic projectile’s x direction (range) and y direction (time and height)?

Answer 24

Since it is parabolic, y-direction time is the same (opposite effects up and down). The height it reaches is lower.

X-direction range is shorter, because it slows horizontal velocity.

Question 25

Does air resistance affect an object sliding down a ramp?

Answer 25

No - it only affects objects moving through the air.

Question 26

With constant acceleration, is a velocity vs. time graph exponential or linear?

Answer 26

linear

Question 27

Equation: free fall: height

Answer 27

d = (1/2)at²

Question 28

For an object sitting on an inclined plane, how does the normal force relate to its weight?

Answer 28

N \< mg

Question 29

Equation: Impulse of collision (Force)

Answer 29

|F| = mΔv/Δt

Question 30

If KE changes over an object's motion, is it conserved?

Answer 30

no

Question 31

Which two forces are equal for an orbiting body?

Answer 31

gravitational and centripetal

Question 32

When energy is lost to friction, how does PE_i compare to KE_f?

Answer 32

PE_i \> KE_f

Question 33

Any time an object moves in a circular path, what is the net acceleration equal to?

Answer 33

centripetal acceleration

Question 34

If an object on a string is swung in a vertical circle, the tension in the string will be greatest at what point?

Answer 34

at the bottom of the circle