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By how much does the rope sag when Gene hangs his jacket?
35.0 cm.
What is the mass of Box B in the pulley setup?
25.0 kg.
1/61
p.1
Forces and Tension

By how much does the rope sag when Gene hangs his jacket?

35.0 cm.

p.4
Forces and Tension

What is the mass of Box B in the pulley setup?

25.0 kg.

p.7
Physical Constants and Units

What is the Boltzmann constant?

1.3806488 × 10⁻²³ J/K

p.7
Physical Constants and Units

What is the mass of an electron?

9.10938291 × 10⁻³¹ kg

p.7
Physical Constants and Units

What is the value of an electron volt (1 eV)?

1.602176565 × 10⁻¹⁹ J

p.1
Forces and Tension

What is the weight of Gene's wet jacket?

3400 N.

p.2
Kinematics and Motion

How long would a flea that can jump 0.445 m remain in the air, neglecting air resistance?

0.301 s

p.1
Physical Constants and Units

What is the mass of the sphere in the Britney Spheres problem?

45 kg.

p.4
Acceleration and Gravity

What is the value of gravitational acceleration used in the problems?

9.81 h m/s².

p.5
Friction and Inclined Planes

What is the minimum force needed to start moving a 150-kg boulder up a 32.0° incline with a coefficient of static friction of 0.60?

281 N.

p.2
Vectors and Angles

What is the angle between vectors ⃗ A = 6.00ˆı + 11.0ˆȷ and ⃗ B = 12.0ˆı − 7.00ˆȷ?

95.9°

p.5
Friction and Inclined Planes

What is the minimum force needed to move the box of bananas from equilibrium?

20.0 N.

p.4
Forces and Tension

What is the weight of Box A in the pulley setup?

400 N.

p.4
Friction and Inclined Planes

What is the coefficient of kinetic friction for the inclined plane?

0.125.

p.3
Physical Constants and Units

How long does it take for the Earth to complete one rotation on its axis?

About 24 hours.

p.7
Physical Constants and Units

What is Planck's constant?

6.62606957 × 10⁻³⁴ J·s

p.7
Physical Constants and Units

What is the magnetic constant (μ₀)?

4π × 10⁻⁷ Wb/A·m

p.7
Physical Constants and Units

What is the value of standard atmospheric pressure?

1.01325 × 10⁵ Pa

p.5
Friction and Inclined Planes

What is the force due to static friction when a 50.0 N box of bananas is at rest with a coefficient of static friction of 0.40?

The force due to static friction is 20.0 N.

p.5
Friction and Inclined Planes

What is the magnitude of the force used to push a 25 kg crate at constant velocity with a coefficient of kinetic friction of 0.2?

49 N.

p.1
Forces and Tension

What is the tension in the rope after Gene hangs his jacket?

9.72 × 10^4 N.

p.4
Forces and Tension

What angles are the ropes hanging at in the tension problem?

50 degrees (left) and 35 degrees (right).

p.3
Forces and Tension

How far would the crate travel in 10.0 seconds on a frictionless floor?

4.09 m.

p.3
Kinematics and Motion

What is the best estimate of Ian's height based on the neon ball's fall?

∼ 1.3 m.

p.3
Forces and Tension

What is the net force exerted on the cart?

2.34 × 10^-1 N.

p.3
Friction and Inclined Planes

What is the coefficient of friction between Marco and the slide?

μk = 0.169.

p.1
Physical Constants and Units

What is the density of the sphere in the Britney Spheres problem?

16.5 g/cm³.

p.2
Kinematics and Motion

Which object will reach the ground first when released at the same height: an object at rest or a projectile with initial velocity perpendicular to gravity?

Both will reach the ground at the same time.

p.4
Forces and Tension

What is the angle of inclination for the box on the inclined plane?

55 degrees.

p.5
Acceleration and Gravity

What is true about Chappell Roan's motion when she jumps?

The direction of her initial velocity is antiparallel to the acceleration due to gravity.

p.7
Physical Constants and Units

What is the acceleration due to gravity at Earth's surface?

9.80665 m/s²

p.3
Projectile Motion

What is the initial velocity of the angry bird named Red?

10.0 h m/s i + 15.0 h m/s j.

p.7
Physical Constants and Units

What is the mass of a proton?

1.672621777 × 10⁻²⁷ kg

p.7
Physical Constants and Units

What is the value of an atomic mass unit (1 u)?

1.660538921 × 10⁻²⁷ kg

p.2
Forces and Tension

If the Ikot Jeep has a constant velocity of 20 km/h and passes 44.5 m from its starting point, what is the initial velocity of the Toki Jeep?

31.9 h m/s

p.2
Forces and Tension

What is true about two forces of the same magnitude F if their resultant force is √2 F?

The angle between the two vectors is π/4 [rad].

p.5
Newton's Laws of Motion

What is a correct action-reaction pair when leaning against a wall?

The force of the wall against you and the force of you against the wall.

p.3
Physical Constants and Units

What is the radius of the Earth?

Approximately 6380 km.

p.3
Acceleration and Gravity

What is the radial acceleration of an object located along the Earth's equator?

0.034 × 10^-2 h m/s².

p.7
Physical Constants and Units

What is Avogadro's number?

6.02214129 × 10²³ molecules/mol

p.3
Projectile Motion

What is the final velocity of the angry bird before reaching the ground?

10.0 h m/s i - 57.0 h m/s j.

p.3
Forces and Tension

How long did the cart take to travel a distance of 1.50 m?

4.55 seconds.

p.1
Kinematics and Motion

What is the question regarding the car's speed asking?

At what time block does it encounter the greatest speed?

p.1
Forces and Tension

How far apart are the supports for Gene's clothesline?

2.86 m.

p.4
Friction and Inclined Planes

What is the coefficient of static friction for the inclined plane?

0.30.

p.4
Forces and Tension

What is the acceleration of Box B in the pulley setup?

To be calculated based on the forces acting on it.

p.7
Physical Constants and Units

What is the value of the gravitational constant (G)?

6.67384 × 10⁻¹¹ N·m²/kg²

p.7
Physical Constants and Units

What is the gas constant (R)?

8.3144621 J/mol·K

p.7
Physical Constants and Units

What is the mass of a neutron?

1.674927351 × 10⁻²⁷ kg

p.3
Forces and Tension

What is the angle of the slide with respect to the horizontal?

35.0 degrees.

p.7
Physical Constants and Units

What is the mechanical equivalent of heat (1 cal)?

4.186 J

p.4
Projectile Motion

If Aiah is 10 m away from Jhoanna, what must be considered to calculate the speed of the throw?

No air resistance.

p.3
Forces and Tension

What is the net horizontal force applied to the crate during the warehouse clean-up?

135 N.

p.7
Physical Constants and Units

What is the magnitude of the charge of an electron?

1.602176565 × 10⁻¹⁹ C

p.3
Projectile Motion

From what height was the projectile launched if the angry bird was launched in a vacuum?

77.0 m.

p.7
Physical Constants and Units

What is the electric constant (ϵ₀)?

8.854187817 × 10⁻¹² C²/N·m²

p.7
Physical Constants and Units

What is absolute zero in Kelvin?

0 K

p.4
Projectile Motion

What is the formula to find the speed at which Aiah must throw the ball?

To be derived from projectile motion equations.

p.7
Physical Constants and Units

What is the speed of light in a vacuum?

2.99792458 × 10⁸ m/s

p.3
Kinematics and Motion

How long did it take for the neon ball to touch the ground?

0.51 seconds.

p.3
Physical Constants and Units

What is the mass of the cart and fan combined?

355 g.

Study Smarter, Not Harder
Study Smarter, Not Harder