At what wavelengths do stars of surface temperates 20 000 K, 10 000 K, and 3000 K have their peak intensity?
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Q: 3. An object of mass, m = 56 kg starts to slide from rest on a curved ramp from height, H = 37 m…
A: Given, Mass, m=56 kg Height, H=37 m Let the velocity at the end of the ramp be v
Q: . Calculate the diameter of a baby's head if there is a time delay of 85 microseconds between…
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- slapshot Vo Slapshot: A hockey puck is hit by a hockey stick. The approximately constant force is 69 N, which acts for a time of 0.11 s. What is the speed of the puck after the slapshot? (Standard hockey puck mass 160 grams, and radius 7.6 cm.) (in m/s) OA: 6.44 OB: 8.57 C: 11.40 OD: 15.16 OE: 20.16 OF: 26.82 OG: 35.67 OH: 47.442. Consider the following arrangement of masses: Mass 1 is connected to mass 2 by a very light string and moves over a frictionless pulley so that both masses move with the same speed and move the same distances (m₂ to the right a distance d and m₁ down a distance d). Assume m₁ 15 kg, m₂ 15 kg, and the coefficient of kinetic friction between m₂ and the table is k = 0.73. Let the masses start with an initial speed of 1.00 m/s. What is their speed after moving 1.00 cm (d = 0.0100 m)? - mq - -25 ms m1There is a mortar that is firing on soldiers who are approaching up the hill towards the mortar. The mortar is angled at an angle of theta = 66.0 degrees and is fired with a initial velocity of 153ft/s. How far down the hill does the shell strick if the hill subtends an angle phi = 35.0 from the horizontal? Ignore air friction. How long will the mortar shell remain in the air? How fast will the shell be traveling when it hits the ground?
- 4. For an object in free fall near the surface of the earth or another planet, how is momentum conserved? (Hint: Momentum is conserved throughout the falling process, not just before the drop and after it lands.)7. An arrow of mass 0.018 kg is shot upward at an angle from the ground, reaching a maximum height of 25 m with a speed of 62 m/s. Neglecting air resistance, with what speed will the arrow hit the ground?A 4.0 kg dog runs from one end of a 21 kg canoe to the other, a distance of 4.9 m. Assuming negligible water resistance, how far does the canoe move in metres? (Hint: the centre of mass of the system is stationary)