B2B STEM

We love to teach Science, Technology, Engineering, and Math with a classic approach. For STEM tutoring, email [email protected].

[B2B STEM @b2bstem]

Jar: 4 red, 3 blue, 5 green. Find P(not green) using the complement rule in 60 seconds. #Math #Probability #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

Spring (k=400N/m) compressed 0.40m launches a block up a ramp then into projectile motion. Find range R in 60 seconds. #Physics #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

+8μC charge at origin. Find electric field E at point P using E=kq/r² in 60 seconds. #Physics #Electricity #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

(2x+5)°+(x+10)°+(3x−3)°=180°. Solve for x. Triangle angle sum in 60 seconds. #Math #Geometry #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

Car crests a circular hill (r=40m). At what speed does normal force=0? Find v_max in 60 seconds. #Physics #CircularMotion #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

Object h=5cm at do=20cm from concave mirror. Find di and hi using the mirror equation in 60 seconds. #Physics #Optics #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

Light from glass (n=1.5) to air (n=1.0). At what angle does TIR begin? Find θc in 60 seconds. #Physics #Optics #TIR #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

m1=3kg and m2=5kg over a pulley. Find acceleration a and string tension T with Newton's 2nd law in 60 seconds. #Physics #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

Proton at v=2×10⁶ m/s perpendicular to B=0.50 T. Find magnetic force F = qvB in 60 seconds. #Physics #Magnetism #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

Ball dropped from rest at height h. Find time t and final velocity v with free fall equations in 60 seconds. #Physics #FreeFall #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

Light in a liquid hits the surface at the critical angle. From geometry: n = 1/sin(θc). Find it in 60 seconds. #Physics #Optics #TIR #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

d=0.50mm, L=2.0m, λ=600nm. Find fringe spacing y = λL/d in 60 seconds. #Physics #WaveOptics #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

Find all zeros of f(x) = x²−5x+6. Factor the quadratic in 60 seconds. #Math #Algebra #Quadratic #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

Ball launched at v0=20 m/s at 30°. Find horizontal range R. Projectile motion in 60 seconds. #Physics #Kinematics #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

N₂ + 3H₂ → 2NH₃. Which reagent runs out first? Limiting reagent and product yield in 60 seconds. #Chemistry #Stoichiometry #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

$40 shirt, 25% off. What's the sale price? Percent multiplier method in 60 seconds. #Math #Percentages #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

q1=+3μC, q2=−5μC separated by distance r. Find force F with Coulomb's Law in 60 seconds. #Physics #Electricity #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

1200 kg car on a flat circular road. Friction = centripetal force. Find μs = v²/rg in 60 seconds. #Physics #CircularMotion #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

Can't measure ΔH directly? Hess's Law builds it from known reactions. ΔH_rxn in 60 seconds. #Chemistry #Thermodynamics #Neurobics #STEM #DrJ

[B2B STEM @b2bstem]

dₒ=30 cm from a converging lens. Find dᵢ and magnification using 1/f = 1/dₒ + 1/dᵢ in 60 seconds. #Physics #Optics #Neurobics #STEM #DrJ