NCERT 2022 | सूक्ष्मजीव : मित्र एवं शत्रु - L9 |Microorganisms| CLASS8 विज्ञान | 8AM | Subhadra Mam

Two cars A and B leave Delhi at 8:30 a.m. and 9 a.m. for Shimla, respectively. They travel at the speeds of 40km/h and 50 km/h respectively. How many kilometres away from Delhi will the two cars be together? दो कारें A तथा B दिल्ली से क्रमशः 8: 30 a.m एवं 9 a.m में शिमला जाने के लिए खुलती है | वे क्रमशः 40 किमी/घंटा तथा 50 किमी/घंटा की चाल से यात्रा करती हैं | दोनों कारें दिल्ली से कितने किलोमीटर की दूरी पर एक साथ होंगी ?

What volume of oxygen gas (O_(2)) measured of 0^(@)C and 1 am needed to burn completely 1 L of propane gas (C_(3) H_(8)) measured under the same conditions?

S:x ^(2) + y ^(2) -8x + 10y =0 and L : x -y -9=0 are the equations of a circle and a line.

Four pipes can fill a reservoir in 15, 20, 30 and 60 hours respectively. The first pipe was opened at 8 am second at 9 am third at 10 am and fourth at 11 am. When will the reservoir be full? 1 pdotmdot b. 2 pdotmdot c. 2. 30 pdotmdot d. 3 pdotmdot

What is the difference of mean and median of the given data . दिए गए आंकड़ों के माध्य एवं मध्यिका में क्या अंतर है ? 4, 13, 8, 15, 9, 21, 18, 23, 35, 1?

A short bar magnet having magnetic moment 4 Am^2 , placed in a vibrating magnetometer, vibrates with a time period of 8 s. Another short bar magnet having a magnetic moment 8Am^2 vibrates with a time period of 6 s. If the moment of inertia of the second magnet is 9 xx 10^(-2) kgm^2 , the moment of inertia of the first magnet is (assuming that both magnets are kept in the same uniform magnetic induction field):